Patients register and visit the orthodontic department; after being examined, diagnosed and seen by the doctor, orthodontic treatment can begin. Before treatment, a series of preparation work is needed. Such as taking the dental model, taking facial image, taking X-ray positioning film, and testing liver function. The doctor has to determine the diagnosis and make the orthodontic treatment plan based on the data results of the model analysis and X-ray cephalometric measurements. For complex cases, expert professors are also requested to consult Yuan Fang, Department of Orthodontics, Urumqi Stomatological Hospital Before orthodontic treatment, dental and periodontal diseases in the oral cavity must also be treated, such as treatment of dental caries and cleaning of dental calculus. The course of orthodontic treatment is long, generally about 2 years. Regular follow-ups are also required, once every 3-4 weeks for fixed orthodontic appliances and once every 2 weeks for removable orthodontic appliances. Therefore, patients should be fully prepared for the idea that they should not be in a hurry and should try to avoid stopping halfway. After the patient wears the aligner, he or she should strictly follow the doctor’s instructions and actively cooperate with the doctor so as to ensure the effectiveness of the treatment. Parents should do a good job of education and help. Patients and parents should trust the doctor and have confidence in the treatment, all of which are conducive to the smooth progress of treatment. It is normal for patients to have mild pain, soreness and other uncomfortable feelings after wearing orthotics, and to be uncomfortable with the orthotics. A period of adaptation process is required. During the orthodontic period, there will also be some degree of impact on eating. Be careful not to eat food that is too hard or too sticky, and the front teeth should not chew hard food directly to prevent damage to the aligners. It is very important to maintain good oral hygiene during orthodontic treatment because the resistance of teeth and periodontal tissues decreases during orthodontic treatment, and poor oral hygiene can lead to teeth and periodontals being more susceptible to caries and gingivitis than usual. So you must insist on brushing your teeth carefully in the morning and evening and after meals. Especially for fixed orthodontic appliances, which are not easy to clean, each time you brush your teeth, you must be clean and thorough, not to cope with the task and be hasty. The movable aligners should also be brushed and cleaned every day, otherwise there will be a bad smell over time. Children are in growth and development, and the orthodontic appliance limits the intake of some food, so children should be properly nourished during the orthodontic period.