The stacker system is an important part of the automated warehouse. It connects with the production line ports (raw material carrier entry and finished product entry and exit) and the three-dimensional warehouse ports, and together with AGV, RGV and three-dimensional warehouse, it forms the production line logistics transportation storage system. The stacker system can be operated manually by a single machine or dispatched and executed by the upper computer in the central control room without on-site attendance. Its high automation ability guarantees the realization of efficient production and efficient logistics..