Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Jun. 30, 2019
Aug. 19, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name Chardan Healthcare Acquisition Corp.  
Entity Central Index Key 0001739174  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Document Type 10-K  
Document Period End Date Jun. 30, 2019  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2019  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company true  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   8,750,000
Entity Public Float   $ 67,593,750
Entity Filer Number 001-38762  
Entity Interactive Data Current Yes  
Entity Incorporation State Country Code DE