The invention discloses a smashing treatment device for food processing and relates to the field of food processing. The smashing treatment device for food processing comprises a base, a box and a smashing assembly used for smashing materials in the box. The top of the box is connected with a feeding hopper. The box is connected with the base in a sliding manner and can move in the horizontal direction. The base is provided with a drive assembly driving the box to move. The smashing assembly comprises a motor, a rotating shaft and multiple cutters installed on the rotating shaft. The side shell wall of the box is provided with a through hole matched with the rotating shaft. According to the smashing treatment device for food processing, the box is connected to the base in a sliding manner,the drive assembly drives the box to move back and forth, so that the action range of the cutters can be expanded, and the smashing effect is guaranteed; the arranged cutters are of an elastic extension and retraction structure and cooperate with multiple slope surfaces, so that the cutters generate extension and retraction when moving relative to the box, and therefore the action range of the cutters is further expanded.