Grinding dust removal cabinet is a kind of grinding dust treatment equipment designed and manufactured by using the working mode of downdraft, upper exhaust and inner circulation. It is equipped with mobile telescopic room to form a grinding room. It is suitable for grinding and dust removal of large workpieces such as sheet metal and special-shaped workpieces. The grinding cabinet can be assembled freely according to the size of workshop and the scope of operation to meet the needs of various working conditions.