The invention discloses an automatic chip removal device for a machine tool, comprising a chip removal pipe, a chip compression box, a bottom plate, a slag-liquid separation box, a liquid storage tank, a reciprocating swing mechanism and a conveying frame. The inside of the chip removal pipe is provided with a spiral The discharge paddle, the left end of the chip discharge pipe is provided with a third motor, the output shaft of the third motor penetrates into the inside of the chip discharge pipe and is connected with the screw discharge paddle, the chip discharge pipe is provided with a chip collection groove, and the The discharge end is connected with the slag-liquid separation box, the conveying frame is arranged below the chip discharge pipe, the conveying frame is provided with a roller, and the roller is provided with a filter conveyor belt, through which the cooling liquid and small particle debris are removed. The left end of the conveying frame is provided with a scraper; the invention has novel structure design, good chip removal effect, can classify the chip particles, is convenient for separate processing, and compresses large chips , saves space, avoids frequent handling of debris and saves time.