During the use of the machine tool, all kinds of metal debris, powder and sludge will gradually accumulate in the water tank of the machine tool. If it is not cleaned for a long time, the volume of the water tank will become smaller, the cutting fluid will not be fully utilized and circulated, and the pipeline will be blocked, and the water pump and parts will be scrapped. There will be a large amount of metal debris accumulation and sludge, smelly and dirty, which is very troublesome to handle. The slag extraction machine can solve the problems of machine tool water tank debris sludge with one key. Moreover, one machine with complete functions can handle the hygiene of a workshop, hand-held mode, and 360 ° cleaning without dead corners.