The invention provides a battery material crushing and iron removing device. The device comprises a box body, wherein the box body is provided with a funnel feeding port, a first motor board, a firstmotor, a sieve ball, a motor cover, a second motor board, a long shaft, a second motor, a crushing rod, a conductive copper sheet, a first electromagnetic plate, a pull frame, a support plate, a slideway, a slider, a scraper, a transition funnel barrel, a third motor, a second electromagnetic plate, a power supply box, a threaded barrel, a box door and an annular port; the funnel feed port is disposed at an upper end of the inside of the box, and the end port of the funnel feed port is at an upper end surface of the box body. The funnel feed port is used for placing a battery material; the sieve ball rotates along with the first motor, and the broken particles of the falling battery material are thrown out by a centrifugal force; the upper end surface of the first motor plate is convex, sothat the falling battery material is prevented from being deposited on the end surface of the first motor board; and the motor cover is used for preventing the battery powder from entering the firstmotor to damage the first motor.