The invention discloses a machine for removing old wall tiles, which comprises a base, a universal wheel, a lifting motor, a push rod, a vibrating motor, a crushing knife and a collecting box; the left end of the base is fixedly connected with a lifting motor, and the top of the lifting motor is fixedly connected There is a support plate, the right side wall of the support plate is provided with a slide rail, the slide rail is slidingly connected with a slider, the right side wall of the slider is fixedly connected with a moving box, and the two symmetrical side walls of the moving box are provided with a chute. A vibrating block is slidably connected in the chute, and a vibrating motor is fixedly connected to the vibrating block. The shaft extension end of the vibrating motor is fixedly connected to a rotating shaft. A collection box is installed on the upper surface, the top of the collection box is hinged with a guide plate, and the lower surface of the guide plate is fixedly connected with a guide spring. Use a broken knife to knock the old tiles on the wall to break and peel off the old tiles, and use a grinding roller to polish the wall. , so that the wall is flat, the work efficiency is high, and the manpower is greatly saved.