Asphalt mixing plant is an equipment device for producing and manufacturing various asphalt concrete, and is the main equipment for road construction and maintenance. The asphalt mixing station heats and sieves during the stone drying process. During the whole mixing process, a certain amount of smoke and dust will be generated. If the smoke and dust are discharged immediately, it will cause serious pollution to the surrounding environment and cause harm to the surrounding residents and food crops. Therefore, it is necessary to use the bag filter of the asphalt concrete mixing plant to filter out the dust, so that the discharged smoke and dust can meet the environmental protection standard.