The methods of correcting malocclusion vary according to the age of the patient and the type of malocclusion, mainly in the following aspects: 1. Preventive Correction Adopt various measures to prevent or block the occurrence and development of malocclusion. Such as paying attention to the mother’s nutrition during pregnancy, preventing excessive radiation exposure and drug abuse. Regular oral examination of children after tooth eruption. Educate children on the proper use of oral organs and functions, and break bad oral habits. Maintaining the gap of prematurely lost milk teeth and extracting the retained supernumerary teeth. This series of preventive measures can prevent the occurrence of malocclusion. 2.Obstructive and comprehensive orthodontic treatment For the malocclusion that has already occurred, appropriate orthodontic appliances, such as mechanical orthodontic appliances or functional orthodontic appliances, should be selected under the guidance of the doctor, and the treatment should be actively carried out. 3.Surgical treatment For some serious bony deformities, it can be combined with surgical treatment, which will also achieve good results. 4, with other oral treatment of orthodontic treatment, such as some patients need to set teeth, the treatment of temporomandibular joint disease.