Maxillary plastic surgery is a common surgical project in plastic surgery. Maxillary plastic surgery can effectively change the contour defects of human face. Maxillary plastic surgery is mainly to correct the abnormal shape of maxilla. How effective is this operation? Maxillary plastic surgery has a good effect. Adults are very worried about maxillary plastic surgery, because maxillary plastic surgery is performed on people's faces. For general medical plastic surgery, many people are very worried about the poor effect of maxillary plastic surgery or the safety of surgery, so maxillary plastic surgery is your only choice. Maxillary plastic surgery is mainly a remedial measure for cases such as short upper lip and exposed upper teeth, congenital absence of individual teeth, occlusion of lower front teeth with upper teeth, and forward movement of upper jaw and upper teeth. Preoperative diagnosis of maxillary plastic surgery: the mandibular position is normal and the maxillary protrusion is obvious; The upper lip is short, the oral lip is not easy to close, and the open lip has teeth; The lower anterior teeth are too high, often accompanied by crowded anterior teeth, which are deeply covered by ⅱ or ⅲ degrees. In severe cases, the teeth will bite the soft tissue of the palate, neck or palate, causing inflammation. X-ray cephalometry showed that sna, anb angle and mandibular angle were all larger than the normal range, and snb angle was normal. If only the dental arch protrudes, the sna angle is normal, but the-sn angle is larger than normal. The purpose of maxillary plastic surgery is to remove the etiology, prevent the onset and prevent the development. Remove the supernumerary teeth in the upper dental arch, get rid of bad habits, treat systemic diseases including nasal and respiratory diseases, correct the dislocation of the front teeth, and coordinate the length and size of the upper and lower dental arches. Correcting the distal position of mandible at an early stage can stimulate the normal development of mandible and inhibit the overgrowth of maxilla.