The utility model relates to a bush removing device. The device comprises a barrel-shaped support saddle with a rotation prohibiting structure, a screw rod helically passing through the center of the bottom of the support saddle, and a round nut screwed with the screw rod on one end of the barrel-shaped opening of the support saddle. The round nut is of a step-shaped cylindrical structure with an outward large end, and tool installing chuck is arranged on the other end of the screw rod; a support saddle screw thread section which matches with the support saddle and a round nut screw thread section which matches with the round nut are arranged on the screw rod, and the screw thread of two screw thread sections are opposite in direction. The bush removing device applicable to the removal of the bush of an oil field beam pumping unit; when construction is carried out, the bush removing device is operated only by one person on ground, thereby achieving simple, convenient and reliable operation, and effectively eliminating potential safety hazard in the operation; at the same time, the labor intensity of workers is also reduced, operating time is reduced, and the end part of the bush is protected against deformation and reject caused by knock.