The process of orthodontics can be divided into ① tooth extraction (some patients don't need it, for example, two teeth can be extracted together, such as two teeth on one side of Zhou Ba and two teeth on the other side every other Zhou Ba); ② Tooth separation; (3) Wearing ring-bonded brackets can be completed at intervals of one week or one month, and subsequent force application needs to be carried out at intervals of one month. If the force is too frequent, it will damage the teeth and teeth nerves.