Propaganda device for marketing

The propaganda device comprises a plate body, a top plate is fixedly arranged at the top end of the plate body, a groove is formed in one side of the bottom end of the top plate, a rotating rod is rotationally connected to the interior of the groove, a thin film is connected to the outer wall of the rotating rod in a winding mode, a heating plate is fixedly arranged on one side of the inner wall of the groove, and an air bag is fixedly arranged on one side of the heating plate. According to the propaganda device for marketing, the thin film, the first friction ring, the second friction ring, the heating plate and the air bag are used in cooperation, when it rains, leaflets on the plate body are covered through the thin film, and therefore corrosion of rainwater to the leaflets is reduced; and then the air bag is heated under the action of heat generated by friction under the use of a first friction ring, a second friction ring and a heating plate, and water drops adhered to the film can be blow-dried through