The components of the environmental protection fog gun machine include: base, high-pressure pump, fan, control equipment and so on. The fan is the main component of the environmental protection fog cannon. The fan is composed of a wind pipe, a water spray ring (nozzle), fan blades and a motor. The choice of the fan directly affects the working efficiency and atomization effect of the fog gun. The fog gun machine relies on the air flow sprayed by the fan to further break and atomize the droplets, and make the droplets have the kinetic energy that can penetrate the dust. In this way, the mist droplets accompanying the micro gas injection are filled between the dust particles and fall together with the dust. The fan of the environmental protection fog cannon is an axial fan. Its air volume is relatively large, the efficiency is relatively high, the wind speed is relatively soft and uniform, the spray range is large, and the range is relatively long. It is one of the main components of the environmental protection fog cannon.