By the spraying and drying of two parts. Working mechanism includes a spray booth equipped with a nozzle contained leather belt, drying systems and cleaning agencies. Now multi-use rotary multi-nozzle spray chamber closed, or computer-controlled ultrasonic nozzle opening and closing, realized there are leather spray, do not spray without leather; saving finishes, reduce pollution, high coating efficiency. Leather sprayed by the belt into a drying zone, after drying collected from the other end.