The dry spray booth is composed of a dynamic and static pressure chamber, a spraying operation room, a paint mist separation chamber, and an exhaust system. The paint mist separation chamber is equipped with a paint mist separation device. The dry spray booth is relative to the wet spray booth. The dry spray booth is a type of paint booth. It is named because its paint mist separation device does not use water in the process of separating the paint mist, and uses a dry method to separate the paint mist.