Additional paid-in Capital Additional Paid-in Capital [Member] Accumulated Other comprehensive loss AOCI Attributable to Parent [Member] Share-based compensations APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Statement [Line Items] Accumulated deficit Retained Earnings [Member] Equity Component [Domain] BALANCE BALANCE Total shareholders’ equity Equity, Including Portion Attributable to Noncontrolling Interest BALANCE (in Shares) BALANCE (in Shares) Shares, Outstanding Net loss Net loss NET LOSS Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Non-controlling interest Noncontrolling Interest [Member] Capital contribution from non-controlling interest of a subsidiary Noncontrolling Interest, Increase from Subsidiary Equity Issuance Issuance of shares (in Shares) Stock Issued During Period, Shares, New Issues Exercise of share option (in Shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Statement of Stockholders' Equity [Abstract] Statement [Table] Equity Components [Axis] Right-of-use assets obtained in exchange of lease liabilities Right-of-Use Assets Obtained in Exchange of Lease Liabilities Represent the amount of right-of-use assets obtained in exchange of lease liabilities. CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Placements of short-term investments Payments to Acquire Short-Term Investments Net cash provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation EFFECT OF EXCHANGE RATE ON CASH Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation NET CHANGE IN CASH Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation CASH, beginning of year CASH, end of year Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash paid for income tax Income Taxes Paid Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Supplemental disclosure of non-cash financing activities: Noncash Investing and Financing Items [Abstract] Issuance of shares Stock Issued During Period, Value, New Issues Exercise of share option Stock Issued During Period, Value, Stock Options Exercised Repurchase of share options Stock Repurchased During Period, Value CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Depreciation Depreciation expense Depreciation, Total Amortization of right-of-use asset Finance Lease, Right-of-Use Asset, Amortization Interest income Investment Income, Interest Change in operating assets and liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Prepayments and other receivables Increase (Decrease) in Prepaid Expenses, Other Long-term deposits Increase (Decrease) in Deposit Assets, Total Accrued expenses Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Operating lease liabilities Increase (Decrease) in Operating Liabilities, Total Other payables – related parties Increase (Decrease) in Due to Other Related Parties Net cash used in operating activities Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation, Total Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment, Total CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net cash provided by financing activity Cash Provided by (Used in) Financing Activity, Including Discontinued Operation, Total Proceeds from registered direct offering, net of transaction cost Proceeds from Registered Direct Offering, Net of Transaction Cost The amount of proceeds from registered direct offering, net of transaction cost. Repurchase of share option Payments for Repurchase of Other Equity Lease extensions Lease Extensions Disclosure of accounting policy for lease extensions. Document Accounting Standard Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus ICFR Auditor Attestation Flag Auditor Name Auditor Firm ID Auditor Location Auditor Opinion [Text Block] Auditor [Line Items] Leases [Abstract] Schedule of Components of Lease Expense Lease, Cost [Table Text Block] Schedule of Minimum Lease Payments in Future Periods Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Segment [Abstract] Schedule of Financial Information, Including Significant Segment Expenses Schedule of Segment Reporting Information, by Segment [Table Text Block] Use of estimates and assumptions Use of Estimates, Policy [Policy Text Block] Risks and Uncertainties Unusual Risks and Uncertainties [Table Text Block] Property and equipment, net Property, Plant and Equipment, Policy [Policy Text Block] Tax Jurisdiction of Domicile [Extensible Enumeration] Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] Cybersecurity Risk Board of Directors Oversight [Text Block] Schedule of Statutory Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Aggregate Deferred Tax Assets Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Valuation Allowance Summary of Valuation Allowance [Table Text Block] Schedule of Statutory Tax Rates [Abstract] Income tax calculated at statutory rate, Percentage Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Changes in valuation allowance, Percentage Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Total, Percentage Effective Income Tax Rate Reconciliation, Percent, Total Deferred tax assets: Net operating loss carry forwards Deferred Tax Assets, Operating Loss Carryforwards Share-based compensation expenses Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Less: valuation allowance Balance at beginning of the year Balance at end of the year Deferred Tax Assets, Valuation Allowance Deferred tax asset, net Deferred Tax Assets, Net, Total Schedule of Valuation Allowance [Abstract] Addition Deferred Tax Assets Addition The amount of addition. Pretax book loss, Amount LOSS BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax calculated at statutory rate, Amount Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Total provision for income taxes Income tax expense PROVISION FOR INCOME TAXES Income Tax Expense (Benefit), Total Changes in valuation allowance, Amount Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Selling and Marketing Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Research and development Expenses Research and Development Expense, Policy [Policy Text Block] Share-based compensation Share-Based Payment Arrangement [Policy Text Block] Recently issued accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Nature of Business and Organization [Abstract] IPO [Member] IPO [Member] Over-Allotment Option [Member] Over-Allotment Option [Member] Statistical Measurement [Axis] Statistical Measurement [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Ordinary Shares [Member] Ordinary Shares Common Stock [Member] Ownership [Domain] Valuation Approach and Technique [Domain] Leasehold improvement [Member] Leasehold Improvements [Member] Disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment, Total Sales of shares Sale of ordinary shares issued (in Shares) Sales of shares Sale of Stock, Number of Shares Issued in Transaction Shareholder’s Equity [Abstract] Weighted Average Grant-date Fair value , Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Grantdate Fair Value Exercisable The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Weighted Average Remaining Contractual Term, Expired, forfeited or cancelled Sharebased Compensation Arrangement By Sharebased Payment Award Options Weighted Average Remaining Contractual Term Expired Forfeited Or Cancelled Weighted average remaining contractual term for option awards forfeited, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Aggregate Intrinsic Value, Expired, forfeited or cancelled (in Dollars) Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Aggregate Intrinsic Value Expired Forfeited Or Cancelled Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options Aggregate Intrinsic Value, Expired, forfeited or cancelled. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. Binomial option pricing model [Member] Valuation Technique, Binomial Pricing Model [Member] Schedule of Key Inputs Used to Estimate the Fair Value of Share Options [Line Items] Risk-free interest rate Risk free rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Option life Expected term Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected volatility Volatility rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected future dividends (in Dollars) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Payments Rate differences in various jurisdictions, Percentage Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Repurchased vested options shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Repurchased vested options per share Weighted Average Grant-date Fair value, Vested and Expected to Vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Dr. Wing Yan (William) Lo [Member] Ms. Evana Yee Wah Hui [Member] Cash Cash Cash Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of the Assets (Details) [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Office furniture, equipment and others [Member] Office Furniture Equipment And Others Member Exercise price per share (in Dollars per share) Weighted Average Exercise Price, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Vest on each anniversary period Vest On Each Anniversary Period Vest on each anniversary period. Over vesting year Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Vested term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Option exercisable per share (in Dollars per share) Stock Option, Exercise Price, Increase Share-based compensation expense (in Dollars) Share-based compensation Share-Based Payment Arrangement, Expense Employee share-based compensation (in Dollars) Employee Benefits and Share-Based Compensation Schedule Of Key Inputs Used To Estimate The Fair Value Of Share Options Abstract Shareholder’s Equity - Schedule of Key Inputs Used to Estimate the Fair Value of Share Options (Details) [Table] Valuation Approach and Technique [Axis] Black-Scholes option pricing model [Member] Black Scholes Option Pricing Model Member Balance due Related Party Tax Expense, Due to Affiliates, Current Expenses paid Related Party Transaction, Amounts of Transaction Taxes [Abstract] Sale of Stock [Axis] Sale of Stock [Domain] Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Mr. Yat-Gai [Member] Mr Yat Gai Member Ordinary shares, par value Common Stock, Par or Stated Value Per Share Purchase price per share Share issued price per share (in Dollars per share) Shares Issued, Price Per Share Net proceeds Additional proceeds received (in Dollars) Proceeds from Issuance of Common Stock Weighted-average period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Percentage of shares issued Percentage Of Shares Issued Percentage of shares issued. Shares of placement agents for the offering Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrants carry term Warrants Carry Term Warrants carry term. Exercisable period Exercisable Period Exercisable period. Exercisable at price (in Dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Aggregated fair value of warrants (in Dollars) Fair Value Adjustment of Warrants Market value of underlying stock price (in Dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price Exercise price of warrants (in Dollars per share) Exercise price (in Dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Schedule Of Consolidated Financial Statements Reflect The Activities Of The Company Abstract Subsidiary of LLC or LP [Table] Ownership [Axis] Regencell Bioscience Limited [Member] Regencell Bioscience Limited Member Regencell Limited [Member] Regencell Limited Member Business Combination [Axis] Business Combination [Domain] Regencell Bioscience Asia Limited [Member] Regencell Bioscience Asia Limited Member Nature of Business and Organization [Line Items] Net revenue percentage Net Revenue Percentage Net revenue percentage. Consolidated Entities [Axis] Consolidated Entities [Domain] Regencell Bioscience North America Limited [Member] Regencell Bioscience North America Limited Member Schedule of Consolidated Financial Statements Reflect the Activities of the Company [Line Items] Principal Activities Subsidiary of Limited Liability Company or Limited Partnership, Business Purpose Place and Date of Incorporation Subsidiary Of Limited Liability Company Or Limited Partnership Placeand State Place and state in which the subsidiary of the limited liability company or limited partnership was organized. Ownership Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Schedule Of Property And Equipment Net Abstract Property, Plant and Equipment [Table] Leasehold improvement [Member] Leaseholds and Leasehold Improvements [Member] Office furniture, equipment and others [Member] Office Equipment [Member] Motor vehicles [Member] Motor Vehicles [Member] Vehicles [Member] Schedule of Property and Equipment, Net [Line Items] Schedule of Estimated Useful Lives of the Assets [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total Property and equipment, net Property, Plant and Equipment, Net Cybersecurity Risk Management Processes Integrated [Text Block] Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block] Incorporated date Entity Incorporation, Date of Incorporation Option Indexed to Issuer's Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Domain] Share-based compensation [Member] Share-Based Payment Arrangement [Member] Statement of Income Location, Balance [Axis] Statements of Income Location, Balance [Axis] Statement of Income Location, Balance [Domain] Statements of Income Location, Balance [Domain] General and administrative [Member] General and Administrative Expense [Member] General and Administrative General and Administrative [Member] General and Administrative [Member] Research and development [Member] Research and Development Research and Development [Member] Research and Development Expenses [Member] Research and Development Expenses [Member] Schedule of Financial Information, Including Significant Segment Expenses [Line Items] Lease term Lessee, Operating Lease, Term of Contract Description of CODM Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Number of operating segment Number of Operating Segments Number of reportable segment Number of Reportable Segments Segments [Domain] NON-CURRENT ASSETS Assets, Noncurrent [Abstract] Total equity attributed to shareholders of the Company Equity, Attributable to Parent, Total Non-controlling interest Equity, Attributable to Noncontrolling Interest NET LOSS ATTRIBUTABLE TO: Net Income (Loss) Attributable to Parent [Abstract] Shareholders of the Company Diluted (in Dollars per share) Earnings Per Share, Diluted Weighted Average Remaining Contractual Term, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Number of Share Options, Vested and Expected to Vest (in Shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Weighted Average Exercise Price, Vested and Expected to Vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted Average Remaining Contractual Term, Vested and Expected to Vest Weighted Average Remaining Contractual Term Vested And Expected To Vest Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, exercisable, weighted average remaining contractual term. Aggregate Intrinsic Value, Vested and Expected to Vest (in Dollars) Repurchased amount Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Number of Share Options, Expired, forfeited or cancelled (in Shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Weighted Average Exercise Price, Expired, forfeited or cancelled Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted Average Grant-date Fair value, Expired, forfeited or cancelled Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Schedule Of Components Of Lease Expense Abstract Leases - Schedule of Components of Lease Expense (Details) [Table] Exercise of share option (in Shares) Number of share options (or share units) exercised during the current period. Selling and marketing Selling and Marketing Expense Salaries and related benefit Salary and Wage, Officer, Excluding Cost of Good and Service Sold Supplies and materials Increase (Decrease) in Materials and Supplies Professional fees Professional Fees Rental expenses Labor and Related Expense Other expenses Other Expenses Research and development Other Research and Development Expense General and administrative Other General and Administrative Expense Weighted Average Exercise Price, Exercised Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Aggregate Intrinsic Value, Exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Weighted Average Grant-Date Fair Value, Exercised Weighted Average Grant-date Fair value,Exercised Weighted Average Grant-date Fair value, Exercised. Number of Share Options, Outstanding Ending Balance Number of Share Options, Outstanding Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance Weighted Average Exercise Price, Ending Balance Weighted Average Exercise Price, Outstanding Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance Weighted Average Grant-date Fair value , Ending Balance Weighted Average Grant-date Fair value ,Outstanding Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Ending Balance Aggregate Intrinsic Value, Outstanding Ending Balance Aggregate Intrinsic Value, Outstanding Beginning Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Schedule of Minimum Lease Payments in Future Periods [Abstract] NET COMPREHENSIVE LOSS ATTRIBUTABLE TO: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Shareholders of the Company Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total Non-controlling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total COMPREHENSIVE LOSS Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total Number of Share Options, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Weighted Average Exercise Price, Granted Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted Average Grant-date Fair value, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted Average Remaining Contractual Term, Granted Sharebased Compensation Arrangement By Sharebased Payment Award Options Weighted Average Remaining Contractual Term Granted Sharebased compensation arrangement by sharebased payment award options weighted average remaining contractual term granted. 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Payments for operating leases Operating Lease, Payments Share-Based Compensation Arrangement by Share-Based Payment Award, Repurchased Share-Based Compensation Arrangement by Share-Based Payment Award, Repurchased. Weighted Average Exercise Price, Repurchased Weighted Average Exercise Price, Repurchased. Weighted Average Grant-date Fair value, Repurchased Weighted Average Grant-date Fair value, Repurchased. Weighted Average Remaining Contractual Term, Repurchased Weighted Average Remaining Contractual Term, Repurchased. Short-term investment Short-Term Investments Prepayments and other receivables Prepaid Expense, Current Total current assets Assets, Current Long-term deposits Deposits Assets, Noncurrent Right-of-use assets, net Operating lease – ROU assets Operating Lease, Right-of-Use Asset Total non-current assets Assets, Noncurrent Total assets Assets CURRENT LIABILITIES Liabilities, Current [Abstract] Accrued expenses Accrued Liabilities, Current Other payables – related parties Other Notes Payable, Current Operating lease liabilities – current Operating lease liabilities Operating Lease, Liability, Current Total current liabilities Liabilities, Current NON-CURRENT LIABILITIES Liabilities, Noncurrent [Abstract] Operating lease liabilities – non – current Operating lease liabilities Operating Lease, Liability, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES Commitments and Contingencies SHAREHOLDERS’ EQUITY Equity, Attributable to Parent [Abstract] Ordinary shares, $0.00001 par value, 100,000,000,000 shares authorized, and 495,884,376 shares and 494,488,908 shares issued and outstanding as of June 30, 2026 and 2025, respectively Common Stock, Value, Issued Statement of Financial Position [Abstract] Related Party Related Party [Member] CURRENT ASSETS Assets, Current [Abstract] Share-based compensation Employee Benefit and Share-Based Payment Arrangement, Noncash Income Statement [Abstract] Property and Equipment, Net [Abstract] Property and equipment, net Property, Plant and Equipment Disclosure [Text Block] Accrued Expenses [Abstract] Accrued expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Commitments and Contingencies [Abstract] Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Subsequent Events [Abstract] Subsequent events Subsequent Events [Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Principles of consolidation Consolidation, Policy [Policy Text Block] Foreign currency translation and transaction Foreign Currency Transactions and Translations Policy [Policy Text Block] Cash Cash and Cash Equivalents, Policy [Policy Text Block] Short term investment Investment, Policy [Policy Text Block] Prepayment Prepayment Policy Text Block Disclosure of accounting policy for prepayment. Long-term deposits Deposit Contracts, Policy [Policy Text Block] Liquidity and Going Concern [Abstract] Liquidity and Going Concern Liquidity And Going Concern Text Block The entire disclosure of liquidity and going concern. Summary of significant accounting policies Significant Accounting Policies [Text Block] Impairment for long-lived assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Fair value measurement Fair Value Measurement, Policy [Policy Text Block] Employee benefit plan Employee Stock Ownership Plan (ESOP), Policy [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Related Parties Related Parties Policy Text Block Disclosure of accounting policy for related parties. Government grants Government Assistance [Policy Text Block] Income taxes Income Tax, Policy [Policy Text Block] Loss per share Earnings Per Share, Policy [Policy Text Block] Commitments and Contingencies Commitments and Contingencies, Policy [Policy Text Block] Concentration of credit risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Statement of Cash Flows [Abstract] Proceeds from maturity of short-term investments Proceeds from Sale of Short-Term Investments SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Nature of business and organization Nature of Operations [Text Block] Related Party Transaction [Abstract] Related Party Transaction Related Party Transactions Disclosure [Text Block] Taxes Income Tax Disclosure [Text Block] Shareholder’s equity Shareholders' Equity and Share-Based Payments [Text Block] Leases Lessee, Operating Leases [Text Block] Share-based compensation Share-Based Payment Arrangement, Noncash Expense, Total Capital contribution from non-controlling interest of a subsidiary, net Proceeds from Noncontrolling Interests Proceeds from exercise of share option Proceeds from Stock Options Exercised Segment Segment Reporting Disclosure [Text Block] Significant assumptions and judgments Significant Assumptions and Judgments [Policy Text Block] Disclosure of accounting policy significant assumptions and judgments. Document Information [Line Items] Document Type Document Annual Report Document Transition Report Document Financial Statement Error Correction [Flag] Document Shell Company Report Entity Interactive Data Current Cover [Abstract] Document Information [Table] Schedule of Consolidated Financial Statements Reflect the Activities of the Company Schedule of Subsidiary of Limited Liability Company or Limited Partnership, Description [Table Text Block] Schedule of Estimated Useful Lives of the Assets Schedule Of Property Plant And Equipment Estimated Useful Lives Table Text Block Tabular disclosure of estimated lives property plant and equipment. Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Schedule of Income Tax Provision Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Key Inputs Used to Estimate the Fair Value of Share Options Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Activities of the Share Options Share-Based Payment Arrangement, Option, Activity [Table Text Block] Entity Addresses, Address Type [Axis] Address Type [Domain] Business Contact Business Contact [Member] Document Registration Statement Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, Country Contact Personnel Name City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Emerging Growth Company Entity Shell Company Entity Central Index Key Entity Address, Postal Zip Code Entity Incorporation, State or Country Code Cayman Islands statutory income tax rate, Amount Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cayman Islands statutory income tax rate, Percentage Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Pretax book loss, Percentage Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Rate differences in various jurisdictions, Amount Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] Cybersecurity Risk Management Positions or Committees Responsible [Flag] Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] Segment Segment Reporting, Policy [Policy Text Block] Cybersecurity Risk Management Expertise of Management Responsible [Text Block] Leasehold improvement Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] Estimated useful lives Property, Plant and Equipment, Useful Life Nature of Business and Organization (Details) [Table] Shareholder’s Equity (Details) [Table] Tax loss carry-forward amount Tax Credit Carryforward, Amount Expected early exercise multiple (in Dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Expected Early Exercise Multiple Expected early exercise multiple. Fair value of the ordinary shares on the date of option grant (in Dollars per share) Share Price Sale of stock, price per share (in Dollars per share) Price per share (in Dollars per share) Sale of Stock, Price Per Share Gross proceeds Gross proceeds (in Dollars) Proceeds from Issuance Initial Public Offering Net proceeds Sale of Stock, Consideration Received on Transaction Conversion of principal amount Conversion of Stock, Amount Issued Conversion of principal per share (in Dollars per share) Debt Instrument, Convertible, Conversion Price Equity interest Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Percentage Accumulated deficit Retained Earnings (Accumulated Deficit) Regencell Bioscience Holdings Limited [Member] Regencell Bioscience Holdings Limited Member Vesting [Axis] Vesting [Domain] 2021 Share Option Plan [Member] Two Thousand Twenty One Share Option Plan Member Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Public Offering Warrants [Member] Public Offering Warrants Member Shareholder’s Equity [Line Items] Ordinary shares, shares authorized Ordinary shares, shares authorized (in Shares) Common Stock, Shares Authorized Ordinary shares, shares issued Ordinary shares, shares issued (in Shares) Common Stock, Shares, Issued Ordinary shares, shares outstanding Ordinary shares, shares outstanding (in Shares) Common Stock, Shares, Outstanding Share split, description Stockholders' Equity Note, Stock Split Aggregate shares Stock Issued During Period, Shares, Other Additional ordinary shares Additional Ordinary Shares The number of additional ordinary shares. Aggregate number of ordinary shares Aggregate Number Of Ordinary Shares Aggregate number of ordinary shares. Percentage of outstanding number of ordinary shares Percentage Of Outstanding Number Of Ordinary Shares Percentage of outstanding number of ordinary shares. Granted issuance of option Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Number of share options, granted Option Granted To Director Gross number of share options (or share units) granted during the period. Weighted Average Remaining Contractual Term, Exercised Sharebased Compensation Arrangement By Sharebased Payment Award Options Weighted Average Remaining Contractual Term ,Exercised Sharebased Compensation Arrangement By Sharebased Payment Award Options Weighted Average Remaining Contractual Term ,Exercised. Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Option Repurchase Agreement [Member] Schedule of Income Tax Provision [Abstract] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Hong Kong Current Income Tax Expense (Benefit) Deferred: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Hong Kong Deferred Income Tax Expense (Benefit) Title and Position [Axis] Title and Position [Domain] Registered Direct Offering (“RDO”) [Member] Aggregate Intrinsic Value, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Aggregate Intrinsic Value Granted Share based compensation arrangement by share based payment award options vested and expected to vest aggregate intrinsic value granted. Aggregate Intrinsic Value, Expired, Repurchased Aggregate Intrinsic Value, Expired, Repurchased. Cybersecurity Risk Management, Strategy, and Governance [Abstract] Cybersecurity Risk Management, Strategy, and Governance [Table] Cybersecurity Risk Management, Strategy, and Governance [Line Items] Cybersecurity Risk Role of Management [Text Block] Cybersecurity Risk Management Processes Integrated [Flag] Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] Summary of Significant Accounting Policies (Details) [Table] Summary of Significant Accounting Policies [Line Items] Cash deposit Cash Deposit Cash deposit Impairment loss Intangible Asset, Including Goodwill, Impairment Loss Advertising expenses Advertising Expense Salary contribution Supplemental Unemployment Benefits, Salary Continuation Tax benefit percentage Tax Benefit Percentage Tax benefit percentage. Significant penalties or interest Income Tax Examination, Penalties and Interest Expense Dilutive shares (in Shares) Dilutive Shares The number of dilutive shares. Related Party Transaction (Details) [Table] Mr. Au [Member] Mr Au Member Related Party Transaction [Line Items] Liquidity and Going Concern [Table] Class of Stock [Axis] Class of Stock [Domain] Liquidity and Going Concern [Line Items] Liquidity and Going Concern [Line Items] Lease payments for asset percentage Lease Payments For Asset Percentage The percentage value of lease payments for the assets under similar term. Depreciation Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Total operating expenses Operating Expenses Operating loss LOSS FROM OPERATIONS Operating Income (Loss) Other income, net Other Nonoperating Income (Expense) Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent WEIGHTED AVERAGE NUMBER OF ORDINARY SHARES Weighted Average Number of Shares Outstanding, Basic [Abstract] Basic (in Shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in Shares) Weighted Average Number of Shares Outstanding, Diluted LOSS PER SHARE Earnings Per Share [Abstract] Basic (in Dollars per share) Earnings Per Share, Basic 2027 Lessee, Operating Lease, Liability, to be Paid, Year One 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total: Total lease liabilities Operating Lease, Liability Schedule of Components of Lease Expense [Line Items] Operating lease costs Operating Lease, Cost Assets Assets [Abstract] Schedule of Activities Share Options [Abstract] Segment [Member] Segment Member Weighted Average Remaining Contractual Term, Outstanding Balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Number of Share Options, Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Schedule Of Financial Information Including Significant Segment Expenses Abstract Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total liabilities and shareholders’ equity Liabilities and Equity OPERATING EXPENSES: Operating Expenses [Abstract] General and administrative (including share-based compensation of $3.22 million, $0.20 million and $0.48 million for the years ended June 30, 2026, 2025 and 2024 respectively) General and Administrative Expense Research and development (including share-based compensation of $2.42 thousand and $0.04 million, reversal of share-based compensation of $0.03 million for the years ended June 30, 2026, 2025 and 2024 respectively) Research and Development Expense OTHER INCOME, NET Other Nonoperating Income OTHER COMPREHENSIVE LOSS Other Comprehensive Income (Loss), Tax [Abstract] Liabilities Liabilities [Abstract] Weighted average remaining term (years) Lease, Cost [Abstract] Operating leases Operating Lease, Weighted Average Remaining Lease Term Weighted average discount rate Weighted Average Discount Rate Abstract Operating leases Operating Lease, Weighted Average Discount Rate, Percent Shorter of the remaining lease terms or estimated useful lives Chief Executive Officer