The invention discloses a novel dust-proof coating stirrer. The novel dust-proof coating stirrer comprises a motor, a barrel body, an upper cover, a lower cover, a filling pipe and an output pipe, wherein both the upper cover and the lower cover are connected with the barrel body through threads, the motor is arranged on the upper cover, the lower part of the motor is connected with a stirrer through a connecting rod, a visual scale bar is arranged on the outer wall of the barrel body, the filling pipe and a filling pipe connector are arranged on the upper cover, the output pipe is arranged at the lower part of the barrel body, valves are arranged on both the filling pipe and the output pipe, and an output pipe connector is arranged at the bottom of the barrel body. According to the technical scheme, various coatings and paints can be uniformly stirred through stirring the coatings with the motor, the mass is ensured, and external substances are prevented by a cover plate from falling in the coatings to affect coating quality; besides, the motor and the stirrer can be disassembled, the work is convenient to coordinate through arranging the filling pipe and the output pipe, and the use is flexible.