The structure feature and function realization of the flexible production line of logistics trolley were introduced. The trolley of FMS800 flexible production line was in charge of the transfer function of workpieces in the logistics warehouse, loading and unloading of material between the station and the processing unit, which movements were combined from the straight track line, mobile workbench bidirectional exchange and lifting movement. Through electrical system control and real time monitoring, identification and transfer of workpieces and the pallet of workbench were completed, and working coordination of the FMS flexible production line was ensured. According to the system parameters, the fast moving speeds are in X axis 40 m/min, Y axis 20 m/min and Z axis 20 m/min. Through the design calculation, the parameters of transmission system and transmission structure of logistics trolley are determined.