v3.26.3
Shareholder’s Equity (Details) - USD ($)
 12 Months Ended
May 22, 2026
Jun. 30, 2025
May 29, 2025
Jan. 01, 2022
Aug. 20, 2021
Aug. 19, 2021
Jul. 20, 2021
Jun. 09, 2021
May 31, 2021
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
May 31, 2026
Sep. 06, 2021
Shareholder’s Equity [Line Items]                            
Ordinary shares, shares authorized   100,000,000,000               100,000,000,000 100,000,000,000      
Ordinary shares, par value   $ 0.00001               $ 0.00001 $ 0.00001      
Ordinary shares, shares issued   494,488,908               495,884,376 494,488,908      
Ordinary shares, shares outstanding   494,488,908               495,884,376 494,488,908      
Price per share (in Dollars per share) $ 20.3                          
Additional proceeds received (in Dollars)                   $ 18,620,000        
Aggregate number of ordinary shares                   1,235,076        
Percentage of outstanding number of ordinary shares                   2.00%        
Granted issuance of option   592,230                        
Exercise price per share (in Dollars per share)                   $ 0.38        
Vest on each anniversary period   4 years   4 years             4 years     4 years
Over vesting year               10 years     10 years      
Vested term       10 years                    
Option exercisable per share (in Dollars per share)                     $ 17.4      
Share-based compensation expense (in Dollars)                   $ 3,226,000 $ 245,000 $ 449,000    
Employee share-based compensation (in Dollars)                   $ 2,948,000        
Weighted-average period                   3 years        
Percentage of shares issued           2.50% 2.50%              
Shares of placement agents for the offering           308,750 8,125              
Warrants carry term                   5 years        
Exercisable period                   180 days        
Exercisable at price (in Dollars per share)                   $ 0.28        
Aggregated fair value of warrants (in Dollars)           $ 30,000.00 $ 270,000              
Risk free rate           0.77% 0.68%              
Expected term           5 years 5 years              
Volatility rate           82.66% 65.24%              
Expected future dividends (in Dollars)                        
Repurchased amount                          
Public Offering Warrants [Member]                            
Shareholder’s Equity [Line Items]                            
Shares of placement agents for the offering           2,185,000 57,500              
2021 Share Option Plan [Member]                            
Shareholder’s Equity [Line Items]                            
Aggregate number of ordinary shares                   46,932,888        
Vesting percentage       25.00%       25.00%     25.00%      
2021 Share Option Plan [Member] | Option Repurchase Agreement [Member]                            
Shareholder’s Equity [Line Items]                            
Repurchased amount                   $ 123,498     $ 123,498  
Regencell Bioscience Holdings Limited [Member]                            
Shareholder’s Equity [Line Items]                            
Ordinary shares, shares authorized   100,000,000,000               100,000,000,000 100,000,000,000      
Ordinary shares, par value   $ 0.00001               $ 0.00001 $ 0.00001      
Ordinary Shares [Member]                            
Shareholder’s Equity [Line Items]                            
Ordinary shares, shares authorized     100,000,000,000           100,000,000,000          
Ordinary shares, shares issued   495,884,376 481,476,042           10,000,000,000   495,884,376      
Ordinary shares, shares outstanding     481,476,042           10,000,000,000 494,488,908        
Share split, description                 On May 31, 2021, the board of directors approved a share subdivision of the Company’s authorized number of ordinary shares at a ratio of 1,000-for-1.          
Price per share (in Dollars per share)     $ 0.00001       $ 0.00001              
Aggregate shares     481,476,042                      
Additional ordinary shares     37                      
Share issued price per share (in Dollars per share)     $ 0.00001                      
Sales of shares 985,222                          
Ordinary Shares [Member] | Registered Direct Offering (“RDO”) [Member]                            
Shareholder’s Equity [Line Items]                            
Ordinary shares, par value $ 0.00001                          
Share issued price per share (in Dollars per share) $ 20.3                          
Sales of shares 985,222                          
Additional proceeds received (in Dollars) $ 18,620,000                          
Ordinary Shares [Member] | Regencell Bioscience Holdings Limited [Member]                            
Shareholder’s Equity [Line Items]                            
Ordinary shares, par value                 $ 0.00001          
Minimum [Member]                            
Shareholder’s Equity [Line Items]                            
Granted issuance of option       15,585       1,235,076            
Number of share options, granted               46,755            
Exercise price per share (in Dollars per share)       $ 0.84       $ 0.25            
Market value of underlying stock price (in Dollars per share)           $ 0.17 0.24              
Exercise price of warrants (in Dollars per share)           0.28 0.28              
Maximum [Member]                            
Shareholder’s Equity [Line Items]                            
Granted issuance of option       592,230       46,932,888            
Number of share options, granted               1,776,690            
Exercise price per share (in Dollars per share)       $ 31.85       $ 9.5            
Market value of underlying stock price (in Dollars per share)           6.3 9.27              
Exercise price of warrants (in Dollars per share)           $ 10.45 10.45              
IPO [Member]                            
Shareholder’s Equity [Line Items]                            
Price per share (in Dollars per share)             $ 0.25              
Sales of shares             87,400,000              
IPO [Member] | Ordinary Shares [Member]                            
Shareholder’s Equity [Line Items]                            
Sales of shares         12,350,000                  
Gross proceeds (in Dollars)             $ 21,850,000              
IPO [Member] | Minimum [Member]                            
Shareholder’s Equity [Line Items]                            
Gross proceeds (in Dollars)             21,850,000              
IPO [Member] | Maximum [Member]                            
Shareholder’s Equity [Line Items]                            
Gross proceeds (in Dollars)             $ 19,820,000              
Over-Allotment Option [Member]                            
Shareholder’s Equity [Line Items]                            
Additional proceeds received (in Dollars)         $ 2,850,000                  
Over-Allotment Option [Member] | Ordinary Shares [Member]                            
Shareholder’s Equity [Line Items]                            
Sales of shares         12,350,000