Material box dust cleaning machine and method thereof

According to the material box dust cleaning machine and the method thereof, automatic equipment special for cleaning dust inside and outside the material box is provided, and the purposes of automatic cleaning, avoiding secondary pollution to the surrounding environment or equipment and further achieving energy conservation and emission reduction are expected to be achieved. The material box dust cleaning machine comprises a rack assembly, a lifting assembly, a protective cover assembly, a pneumatic element assembly, a brush roller mounting assembly and a purifier, wherein the lifting assembly, the protective cover assembly and the pneumatic element assembly are installed on the rack assembly, the brush roller mounting assembly is installed and connected through the lifting assembly and drives the lifting assembly to reciprocate in the vertical direction of the rack assembly, and the purifier communicates with the brush roller mounting assembly and sucks dust outwards from a material box. The lifting assembly