Moment adjustable orthodontic bracket

The invention relates to a moment adjustable orthodontic bracket. According to the moment adjustable orthodontic bracket, a rectangular box body is connected to the lateral surface of a bracket box body; the bracket box body is connected with a bracket main body and a gear shaft in a rotational mode; the gear shaft extends into the rectangular box body; a compressed spring, a positioning support block and an adjusting knob are arranged on the gear shaft, and the positioning support block and the adjusting knob are positioned in the rectangular box body; the adjusting knob is connected with the gear shaft in an axial sliding mode; external teeth are formed on the circumferential surface of one end of the adjusting knob; tooth-shaped holes which are matched with the external teeth are formed in the rectangular box body; the compressed spring is positioned between the positioning support block and the adjusting knob, and the external teeth on the adjusting knob are jacked into the tooth-shaped holes by the compr