A self-ligating orthodontic bracket and opening process thereof are provided. A self-ligating orthodontic bracket comprises a bracket body and a movable closure member, wherein the bracket body includes a first flank, a second flank and an archwire slot therebetween； and the movable closure member is engaged with the second flank and movable relative thereto between an opened position in which an archwire is insertable into the archwire slot, and a closed position in which the movable closure member retains the archwire in the archwire slot； at least one of the first flank and the movable closure member includes an opening slope provided at an inward end of the first flank and/or the movable closure member and adjacent to the archwire slot. the archwire slot and the first flank co-form a first side surface, while the archwire slot and the second flank co-form a second side surface； the opening slope have a slope top and a slope bottom, and slopes downwards to the first side surface.An opening process of the self-ligating orthodontic bracket comprises:a tip of an opening tool is positioned at the opening slope, a tip of the opening tool slides along the opening slope, pushing the movable closure member to slide along the opening slope. The self-ligating orthodontic bracket and opening process thereof provided in the invention facilitate orthodontists to open the archwire slot, and bring convinience to the orthodontic treatment.
