The invention discloses a coating machine applied in a catalyst production process. The coating machine applied in the catalyst production process comprises hinge pins, a spraying chamber and a motor. A feeding pipe is installed on the top side face of a machine frame and communicates with the interior of the spraying chamber. A booster pump is arranged on the feeding pipe and connected with the motor. An electric heater is installed on the feeding pipe and located below the booster pump. According to the coating machine applied in the catalyst production process, atomization of a catalyst is achieved through the booster pump and the feeding pipe, the electric heater is arranged to perform primary heating on the catalyst so that the catalyst can adhere to the material surface, the catalyst adhering to the material surface can tend to solidify by means of a heating lamp, the phenomenon that the catalyst flows is avoided, the operations are controlled through a control panel, and the coating machine applied in the catalyst production process is compact in structure and convenient to use.