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Cover Page - shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Document Information [Line Items]    
Document Type 20-F  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Amendment Flag false  
Entity Central Index Key 0001759783  
Entity File Number 001-39151  
Document Period End Date Dec. 31, 2022  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus FY  
Current Fiscal Year End Date --12-31  
Entity Registrant Name EHang Holdings Limited  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 11/F Building One, EHang Technology Park  
Entity Address, Address Line Two No. 29 Bishan Blvd  
Entity Address, Address Line Three Huangpu District  
Entity Address, City or Town Guangzhou  
Entity Address, Postal Zip Code 510700  
Entity Address, Country CN  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Interactive Data Current Yes  
ICFR Auditor Attestation Flag true  
Auditor Name PricewaterhouseCoopers Zhong Tian LLP Ernst & Young Hua Ming LLP
Auditor Firm ID 1424 1408
Auditor Location Guangzhou, the People’s Republic of China Shanghai, the People’s Republic of China
Document Accounting Standard U.S. GAAP  
Business Contact [Member]    
Document Information [Line Items]    
Contact Personnel Name Richard Jian Liu  
Entity Address, Address Line One 11/F Building One, EHang Technology Park  
Entity Address, Address Line Two No. 29 Bishan Blvd  
Entity Address, Address Line Three Huangpu District  
Entity Address, City or Town Guangzhou  
Entity Address, Postal Zip Code 510700  
Entity Address, Country CN  
City Area Code +86 20  
Local Phone Number 2902 8899  
American Depositary Shares [Member]    
Document Information [Line Items]    
Title of 12(b) Security American depositary shares, each representing two Class A ordinary shares, par value US$0.0001 per share  
Trading Symbol EH  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding 116,455,947  
Class A ordinary shares [member]    
Document Information [Line Items]    
Title of 12(b) Security Class A ordinary shares, par value US$0.0001 per share  
No Trading Symbol Flag true  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding 77,429,387  
Class B ordinary shares [member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding 39,026,560