The self-driving rail-trolley for the logistic transfer system of the utility model belongs to a conveyer. The utility model is a box-type vehicle chassis frame provided with a carriage wheel. The chassis frame is a frame made up by four angles between the upper plate and the lower plate connected by pillars. The hollow cutting points of the four angles of the lower plate are inserted and axletree fixed with four groups of top and bottom two-two corresponding carriage wheels on the lower plate shaft frame. The wheel axle of the drive gear is supported by the wheel carrier fixed to the lower side of the upper plate. The gearwheel is lowly inserted at the hollow cutting point of the lower plate. The driving motor is fixed at the lower side of the upper plate. The axle of the motor is movable fit to the drive gear by the turbine scroll bar. The lower side of the lower plate is equipped with three items of metallic brushes connected with the circuit of the motor. The upper side base of the upper plate is provided with a load carriage. The utility model has advantages of reasonable design, simple structure, stable and reliable running, strong carrying capacity and low power consumption, etc.