The general conceptions and principles are similar, such as in the field of forbidden used for chemical pesticide and fertilizer, the requests for conversion period etc. But there are still some major differences as below:
Chinese organic standard requests the environmental testing for soil, irrigation water and air quality for plant products.
Chinese organic standard requests the product testing for all certified products.
Chinese organic standard has a separate part for management system.
EU requirements/regulations have more strict request for seed (organic seed with database), compose (no human compose) etc.
Inputs differences related to Plant Protection Products; Soil Conditioners; Feed Additives; processing additive and processing aid.
Chinese organic standard defines a product catalogue, only products in the catalogue  can be certified as organic products .