Online and offline data linkage display method and system

The invention relates to an online and offline data linkage display method and system, and belongs to the technical field of electronic commerce. The system comprises an online module and an offline module which are connected with each other; the online module comprises an online inventory management unit, an online price management unit and a user order management unit; the offline module comprises an offline price management unit and an offline inventory management unit. According to the invention, data interaction is carried out through the online inventory management unit and the offline inventory management unit, data of online inventory and offline inventory are unified, and prices of same commodities are unified through the online price management unit and the offline price management unit; meanwhile, for the inventory, besides inventory synchronization, the commodity inventory change is predicted through a commodity inventory change prediction method based on a mixed attention mechanism, and the situa