The invention relates to a ventilation chassis device with a pagoda structure, and belongs to the field of medicine, chemical engineering, materials and food equipment. Comprising a chassis and a pagoda structure, slotted ventilation holes are formed in an annular area around the center of the chassis, the part from the ventilation holes to the edge of the chassis is a solid part, and the edge of the chassis is of an R-angle design. The pagoda structure is installed above the ventilation holes and composed of a plurality of pagoda rings, a pagoda cap and a connecting rod, the pagoda rings are overlapped to form a pyramid shape, and the top end of the pagoda ring is fixedly connected with the connecting rod fixed to the center of the base plate through the pagoda cap. The ventilation chassis device with the pagoda structure is applied to the fluidization coating machine, so that materials can perform continuous spiral movement along with wind, the fluidization stroke of the materials in a cavity is prolonged, the bed collapse phenomenon and the adhesion phenomenon are avoided, the heat exchange rate of the materials is increased, the drying efficiency is improved, the energy consumption is reduced, and the utilization rate of coating liquid is improved.