Document and Entity Information
12 Months Ended
Mar. 31, 2019
Document and Entity Information  
Document Type 20-F/A
Amendment Flag false
Document Period End Date Mar. 31, 2019
Entity Registrant Name Global Cord Blood Corp
Entity Central Index Key 0001467808
Current Fiscal Year End Date --03-31
Document Fiscal Year Focus 2019
Document Fiscal Period Focus FY
Entity Filer Category Accelerated Filer
Entity Voluntary Filers No
Entity Shell Company false
Entity Emerging Growth Company false
Entity Common Stock, Shares Outstanding 121,551,075
Entity Well-known Seasoned Issuer No
Entity Current Reporting Status Yes