v3.22.2.2
Cover
 12 Months Ended
Mar. 31, 2022
shares
Entity Addresses [Line Items]  
Document Type 20-F
Amendment Flag false
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Period End Date Mar. 31, 2022
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2022
Current Fiscal Year End Date --03-31
Entity File Number 000-55631
Entity Registrant Name ZHONG YUAN BIO-TECHNOLOGY HOLDINGS LIMITED
Entity Central Index Key 0001672886
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One Suite 901
Entity Address, Address Line Two Tesbury Centre
Entity Address, Address Line Three 28 Queen’s Road East
Entity Address, City or Town Wanchai
Entity Address, Country HK
Entity Address, Postal Zip Code 00000
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 Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Common Stock, Shares Outstanding 17,547,118
Auditor Name K.R.MARGETSON LTD.
Auditor Location Canada
Auditor Firm ID 1212
Centurion ZD CPA & Co. [Member]  
Entity Addresses [Line Items]  
Auditor Name Centurion ZD CPA & Co.
Auditor Location Hong Kong
Auditor Firm ID 2769
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One Suite 901
Entity Address, Address Line Two Tesbury Centre
Entity Address, Address Line Three 28 Queen’s Road East
Entity Address, City or Town Wanchai
Entity Address, Country HK
Entity Address, Postal Zip Code 00000
City Area Code 852
Local Phone Number 2919-8916
Contact Personnel Name CHANG TingTing
Contact Personnel Email Address tinachang@zybioholdings.com