The invention discloses a gear high in use efficiency. The gear comprises a gear disc, teeth are fixedly connected to the surface of the gear disc, a through hole is formed in the gear disc, a round partition plate is fixedly connected into the gear disc, damping devices are fixedly connected to the side, away from the through hole, of the round partition plate, the side, away from the round partition plate, of each damping device is fixedly connected with the inner wall of the gear disc, and fixing devices are fixedly connected to the side, close to the through hole, of the round partition plate; and according to the gear high in use efficiency, the problem that during operation of a current gear, large vibration is generated, and the teeth are damaged is solved. The teeth are prevented from being greatly worn, the phenomenon that the surfaces of the teeth are torn is avoided, the service life of the gear is prolonged, the expenditure of economic cost is reduced, the replacement difficulty is reduced, a user can conveniently detach the gear, the replacement time is shortened, and the normal work efficiency is ensured.