The invention discloses a special composite machine for a hot-melt film. The composite machine comprises a support, unwinding devices, a heating composite roller device, a traction device and a winding device, wherein the number of the unwinding devices is three; the unwinding devices are arranged at the front end of the heating composite roller device; a controller is arranged in each of the three unwinding devices; the heating composite roller device comprises a fixed roller and a pressing roller; heat conduction oil is arranged in the fixed roller; an air cylinder is arranged under the pressing roller; and the traction device and the winding device are arranged at the rear end of the heating composite roller device. The composite machine provided by the invention is novel in structure and high in practicability; the speed of three layers of materials entering the heating composite roller device is consistent; and the roller heat conduction oil is adopted for heating, so that the flatness of the cloth cover is high, the production period is shortened, and the production efficiency is improved.