The detailed procedure of orthodontic surgery is as follows: 1. Take full-mouth surface tomograms and cephalometric films, and take intraoral, extraoral, open-mouth and closed-mouth photographs, combine with observation models for case analysis, and determine the orthodontic plan. 2. In the case of maxillary and mandibular protrusion and severe crowding, wisdom teeth and 1-2 premolar teeth need to be extracted. 3. 4. Replace the remaining gaps with stainless steel wires to adjust the occlusal relationship between upper and lower teeth. 5. Remove the aligners and wear retainers for 1-2 years to prevent the teeth from shifting.