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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Subsidiaries and Variable Interest Entities (Details)
Jul. 31, 2019
ATIF  
Significant Accounting Policies [Line Items]  
Percentage of ownership in subsidiary 100.00%
ATIF HK  
Significant Accounting Policies [Line Items]  
Percentage of ownership in subsidiary 100.00%
Huaya  
Significant Accounting Policies [Line Items]  
Percentage of ownership in subsidiary 100.00%