v3.26.1
Cover - USD ($)
 12 Months Ended
Apr. 30, 2026
Jul. 29, 2026
Oct. 31, 2025
Document Information [Line Items]      
Entity Central Index Key 0002030522    
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --04-30    
Document Period End Date Apr. 30, 2026    
Document Fiscal Year Focus 2026    
Document Transition Report false    
Entity File Number 001-42554    
Entity Registrant Name MARWYNN HOLDINGS, INC.    
Entity Incorporation, State or Country Code NV    
Entity Tax Identification Number 99-1867981    
Entity Address, Address Line One 2955 Main Street, Ste 100A    
Entity Address, City or Town Irvine    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92614    
City Area Code +1 949    
Local Phone Number 706-9966    
Title of 12(b) Security Common Stock, $0.001 par value per share    
Trading Symbol MWYN    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   20,194,804  
Documents Incorporated by Reference [Text Block] None    
Amendment Flag false    
Document Fiscal Period Focus FY    
Entity Public Float     $ 7,558,490