Provided is an orthodontic self-ligating bracket in which the second wing formed on the bracket body is formed to be lower than the height of the first wing, and when pushing the wire to the slot to mount the wire to the slot by installing the wire coupling device on the top surface of the second wing, while the plate tip is pushed rearward by the force for pushing the wire, the slop inlet is open, and when the wire is mounted on the slot and the pushing force disappears, the plate tip closes the slot inlet, thereby remarkably shortening the wire mounting time and allowing very convenient wire mounting.