Fog cannons are available in many forms, including fixed, mobile and vehicle-mounted. The mobile fog cannon is small in size and light in weight, and can be easily moved between different working sites through its own roller, chassis or trailer and other devices, to carry out dust removal operations anytime and anywhere, and adapt to various complex working environments. The vehicle-mounted fog cannon can be installed on the vehicle, which is more mobile and can quickly respond to the dust reduction needs of different regions.