A stripping device for a floor cleaning machine, wherein the stripping device comprises: a holding device which can be fastened to a floor cleaning machine; a suction nozzle which can be detachably coupled to the holding device and which comprises the following: i) an elongate frame with a front side arranged transversely to a forward movement direction of a floor cleaning machine, a rear side, and a hollow space open at the bottom on the frame; and ii) a suction pipe which - viewed in vertical direction during operation of the stripping device - is arranged on an upper side of the frame and opens into the hollow space; wherein the holding device comprises a first coupling part and the suction nozzle comprises a second coupling part which can be detachably engaged in the first coupling part, characterized in that one of the first and second coupling parts (14, 15) comprises a first magnet and the other one of the first and second coupling parts (14, 15) comprises a second magnet or a ferromagnetic part, so that the first and second coupling parts (14, 15) are pulled toward one another viewed in the forward movement direction; and one of the first and second coupling parts (14, 15) is formed as a female coupling structure and the other one of the first and second coupling parts (14, 15) is formed as a male coupling structure; wherein the female and the male coupling structures (18, 19) can be detachably engaged in one another in the forward movement direction and can be connected to one another by positive connection toward the upper side of the suction nozzle and transversely to the forward movement direction. a holding device which can be fastened to a floor cleaning machine; a suction nozzle which can be detachably coupled to the holding device and which comprises the following: i) an elongate frame with a front side arranged transversely to a forward movement direction of a floor cleaning machine, a rear side, and a hollow space open at the bottom on the frame; and ii) a suction pipe which - viewed in vertical direction during operation of the stripping device - is arranged on an upper side of the frame and opens into the hollow space; wherein i) an elongate frame with a front side arranged transversely to a forward movement direction of a floor cleaning machine, a rear side, and a hollow space open at the bottom on the frame; and ii) a suction pipe which - viewed in vertical direction during operation of the stripping device - is arranged on an upper side of the frame and opens into the hollow space; wherein the holding device comprises a first coupling part and the suction nozzle comprises a second coupling part which can be detachably engaged in the first coupling part, characterized in that one of the first and second coupling parts (14, 15) comprises a first magnet and the other one of the first and second coupling parts (14, 15) comprises a second magnet or a ferromagnetic part, so that the first and second coupling parts (14, 15) are pulled toward one another viewed in the forward movement direction; and one of the first and second coupling parts (14, 15) is formed as a female coupling structure and the other one of the first and second coupling parts (14, 15) is formed as a male coupling structure; wherein the female and the male coupling structures (18, 19) can be detachably engaged in one another in the forward movement direction and can be connected to one another by positive connection toward the upper side of the suction nozzle and transversely to the forward movement direction.