The surgery performed for maxillary protrusion is orthognathic surgery, and the common ones are maxillary anterior osteotomy and Lefort type 1 osteotomy, which are suitable for cases of overdevelopment of the maxilla. 1. Anterior maxillectomy. Maxillary anterior osteotomy is suitable for maxillary anterior teeth and alveolar bone protrusion, and is often combined with mandibular anterior subapical osteotomy to correct bimaxillary protrusion. 2. Lefort type 1 osteotomy: Lefort type 1 osteotomy is suitable for maxillary anterior and posterior, vertical and lateral overdevelopment, as well as maxillary maxillary plane tilt, clinically, it is used to correct bimaxillary deformity in conjunction with mandibular surgery. Meanwhile, before the surgery for maxillary protrusion, a physical examination is required to ensure that the body is free from blood system diseases, diabetes, AIDS and other systemic diseases, and to make sure that the body can tolerate orthognathic surgery. Orthodontic treatment is also required before and after the surgery.