Trigger opening type self-ligating bracket

The invention relates to a trigger opening type self-ligating bracket, and relates to the field of dental orthodontic instruments, the bracket comprises a main body, an arch wire groove is formed in the main body, the arch wire groove penetrates through the main body along the length direction of the main body, a locking plate capable of closing the arch wire groove is slidably connected to the main body along the width direction of the main body, and a bottom plate is connected to the lower part of the main body; an elastic piece is arranged between the body and the locking piece, one end, in the sliding direction of the locking piece, of the elastic piece is tilted to form a supporting arm, the side face, facing the elastic piece, of the locking piece is provided with a first locking face, a trigger hole is formed in the locking piece in the thickness direction of the locking piece in a penetrating mode, and when the locking piece slides to close the arch wire groove, the first locking face and the supporti