The main painful stages of orthodontic treatment are the pain of tooth extraction after the development of an orthodontic plan, the soreness and discomfort of the initial braces, the pain after the follow-up reinforcement, and the pain that may be caused by the need for micro-implant nails (i.e., bone nails) in the orthodontic treatment of some malocclusions. With the continuous development of medicine, the process of orthodontic treatment is becoming more and more comfortable, and patients can choose the right type of orthodontic treatment according to the different degrees of malformation. Due to the different physique of individuals, the feeling of pain varies from person to person, and generally speaking the painful stages of the orthodontic process are mainly the following: 1, extraction before orthodontic treatment: some patients with wisdom teeth or overcrowded teeth need to have their teeth extracted before wearing braces. The pain of tooth extraction is usually more intense, if necessary, you can take oral anti-inflammatory and analgesic drugs to relieve; 2, when wearing braces: braces have movable brackets, ceramic brackets, self-locking brackets, lingual hidden brackets and invisible brackets and so on, according to the doctor’s recommendations and their own situation to choose, when wearing braces may be slightly uncomfortable, but after wearing a period of time will gradually adapt; 3, after the follow-up reinforcement: orthodontic Teeth is not a quick fix, but needs to be phased in gradually. Usually the review time is 1-3 months, the review will be based on the situation to replace the braces or reinforcement. In the follow-up reinforcement often have discomfort or pain symptoms, but generally tolerable; 4, playing bone nails: not all patients in orthodontics need to play bone nails, generally playing bone nails is to play a good fixed and support role, conducive to orthodontics. And playing bone nail is carried out under anesthesia, basically does not cause pain, but after playing relatively painful, especially after the anesthetic past pain is obvious, it is recommended to take oral anti-inflammatory and analgesic drugs to relieve.