Elastic piece type self-ligating bracket

The invention relates to the field of tooth orthodontics, in particular to an elastic piece type self-ligating bracket which comprises a base plate, a bracket body, an elastic piece body with a trapezoidal bottom surface and a movable locking plate, an arch wire groove is formed in the bracket body, a first working wing and a second working wing are arranged on the two sides of the arch wire groove respectively, a sliding groove is formed in the second working wing, and the movable locking plate is arranged in the sliding groove. An elastic piece mounting hole penetrating through the bracket body is formed in the groove bottom surface of the sliding groove, and a non-through sinking table body parallel to the sliding groove is arranged at the end, close to the groove bottom surface, of the elastic piece mounting hole. According to the elastic piece type self-ligating bracket, one end, far away from the arch wire groove, of each of the first working wing and the second working wing has a certain bending radian