The invention discloses a self-service film printing system. The system includes a self-service film printer, a support assembly is disposed on the bottom of the self-service film printer, the supportassembly includes a limiting rod, a support block and idler wheels connected in sequence, a groove is formed in the upper surface of the support block, and the bottom of the self-service film printeris inserted into the groove; two idler wheels are provided, the axes of the two idler wheels are parallel to each other and respectively connected with the lower surface of the support block, the idler wheels can rotate around the axes of the idler wheels, a plurality of limiting holes are formed in the idler wheels, and the limiting holes are parallel to the axes of the idler wheels; a limitingplate is arranged on the side wall, perpendicular to the idler wheel axes, of the support block, a mounting hole is formed in the limiting plate, one end of the limiting rod is inserted into the limiting hole, and the other end of the limiting rod is inserted into the mounting hole. The labour for moving the self-service film printer can be saved, and the efficiency of moving can be improved by the adoption of the system.