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Document And Entity Information
 12 Months Ended
Sep. 30, 2019
shares
Cover [Abstract]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Amendment Flag false
Document Period End Date Sep. 30, 2019
Document Fiscal Year Focus 2019
Document Fiscal Period Focus FY
Entity Registrant Name Origin Agritech LTD
Entity Central Index Key 0001321851
Current Fiscal Year End Date --09-30
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 false
Trading Symbol SEED
Entity Shell Company false
Entity Common Stock, Shares Outstanding 4,801,724