At present, there are some outstanding problems in the implementation of the fair competition review system. Some policies and measures failed to carry out fair competition review as required when drafting, and implicitly discriminated against operators, especially private enterprises, in terms of market access, factor acquisition, government procurement, bidding, incentives and subsidies. Local protection, regional blockade, industrial barriers and other situations still exist, such as "glass doors", "revolving doors", "spring doors" And other phenomena are relatively prominent, hindering details