Misaligned teeth will affect the aesthetics, but also bring some psychological impact, misaligned teeth can be corrected through orthodontic treatment. If in the period of tooth replacement children do not generally need orthodontic correction, after the replacement of teeth can have a certain degree of improvement in the phenomenon of tooth misalignment; but if there is a serious maxillary and mandibular bone deformity, or bad habits seriously affect the development of teeth and jaws to be orthodontic. If adults have misaligned teeth, it is recommended to go for correction as soon as possible. Currently in the clinic, orthodontic methods are movable aligners, fixed aligners, functional aligners, orthognathic surgery, and each orthodontic method is applicable to different patients. Usually movable braces are suitable for the correction of relatively simple misalignment, this correction patients can take off and wear themselves. Fixed orthodontic appliances are the most widely used method in clinical practice, but patients are not able to take them off themselves; functional orthodontic appliances are mainly used to correct bony malocclusions. Patients with malocclusion should also take regular care of their teeth. It is recommended to brush the teeth in the morning and evening on a regular basis, go to the dental clinic for regular scaling, especially for those who have the habit of smoking, it is recommended to scaling once every three months, use the correct brushing method when brushing the teeth, rinse the mouth after meals, and use dental floss. Patients with misaligned teeth are recommended to take timely orthodontic treatment and choose an orthodontic method according to their needs; it is also necessary to strengthen the care of the oral cavity.