The invention discloses a feed plate device capable of preventing copper strip accumulation. The feed plate device comprises a wire outlet device and an abutting device. The wire outlet device comprises a feed plate. A horizontal guiding groove used for allowing a feed plate shaft to move horizontally is formed in the wire outlet device. The abutting device comprises a gear-rack mechanism. A rack of the gear-rack mechanism is arranged horizontally. The height of the rack is identical to that of the feed plate shaft. The abutting device is provided with a limiting part which only allows the degree of freedom of the rack in the horizontal direction. The feed plate and a gear are driven by a motor-belt transmission device to operate synchronously. The gear does not drive the rack to move horizontally when rotating in the conveying direction of copper strips. The gear drives the rack to move horizontally when rotating in the direction opposite to the conveying direction of the copper strips so that the feed plate can be abutted away. The top end of the rack is provided with an absorption gear hinged to the top end of the rack. A driven absorption gear engaged with the absorption gear is arranged in the corresponding position of the feed plate shaft. By the adoption of the feed plate device, the feed plate which still rotates can be pushed away by a certain distance in a flexible mode, and thus the copper strips can be prevented from being accumulated at the front end of a slitting tool.