A self-ligating orthodontic bracket is provided. The self-ligating orthodontic bracket comprises a bracket body and a movable closure member, wherein the bracket body includes a first body portion, a second body portion and an archwire slot therebetween, running through the bracket body, and the movable closure member is engaged with the second body portion and movable relative thereto between an opened position and a closed position； the first body portion and/or the movable closure member include, at the inward end thereof, a tool receptacle having a receptacle top and a receptacle bottom, and the tool receptacle is adjacent to the archwire slot, the archwire slot and the first body portion co-form a first side surface, while the archwire slot and the second body portion co-form a second side surface, the tool receptacle includes a smooth surface that slopes downwardly to the first side surface. In operation, a tip of an opening tool is inserted into the tool receptacle, then the tip of said opening tool slides along the smooth surface downwardly to the receptacle bottom, whereby said opening tool pushes the moveable closure member so as to open the archwire slot.
