ERP system based on multi-stage entrance cascading

The invention relates to the technical field of ERP, in particular to an ERP system based on multistage entrance cascading. The system comprises an entrance system for a client terminal to obtain an entrance identifier, wherein the entrance system is an entrance of a tree topology structure formed by cascading multiple stages in sequence, the client terminal can obtain a unique entrance identifierof the entrance from any entrance in the entrance system, and the entrance is a service provider system used for providing commodities for the shopping system for a platform user, a service providerof a platform or other enterprises and individuals and; the shopping system has a commodity selection module, an order generation module and an order payment module. After the client terminal obtainsthe entrance identifier from the entrance system, the client terminal enters the registration module for registration, and after registration, the client terminal enters the commodity selection moduleof the shopping system for