According to the properties of coating production, it can be divided into intermittent production and continuous production. Intermittent production spray room is mainly used for single or small batch of workpiece painting operation, can also be used for large batch of small workpiece painting operation. Its form according to the workpiece placement way has the table, the suspension type, the table mobile three. Intermittent production of spray room for semi-open, continuous production of spray room for a large number of workpiece painting operation, generally through the type, by hanging conveyor, rail car and ground conveyor and other transport machinery transport workpiece. Continuous production of spray room and paint pretreatment equipment, film curing equipment, transport machinery and other components of automatic painting production line, this kind of spray room, can be in the import and export of spray room with paint before preparation room and cool dry room (their role is in addition to dust. Play a buffer role, can also form a wind curtain in the entrance and exit of the spray room, to prevent spray paint mist into the workshop. According to the airflow direction and suction mode in the spray room, it can be divided into four kinds: transverse air, longitudinal air, bottom air and upper and lower air. The indoor air direction is vertical with the moving direction of the workpiece in the horizontal plane. The vertical air is called transverse air and the moving direction of the workpiece. The direction of indoor airflow is vertical to the moving direction of the workpiece in the vertical plane, which is called the bottom exhaust and the lower exhaust, because it can form cesium fixed airflow. So it is the most commonly used structural form of spray paint room.