Many parents and patients are concerned that orthodontic treatment will cause pain and discomfort to their children. Pain makes patients fear orthodontic treatment and even give up on it. Most patients experience varying degrees of pain during orthodontic treatment, especially during tooth separation, the early stages of treatment, and a few days after archwire replacement. After the fixed orthodontic appliance is placed, the pain is usually most pronounced when the archwires are first placed in alignment. Pain occurs within a few hours to day 3 after the ligature of the archwires in most patients, accounting for about 85% of patients, and in a few patients it can last from day 8 to day 10. In order to minimize the pain in orthodontic treatment, the following points should be noted: 1, the first time to wear aligners teeth will have mild pain, soreness and other uncomfortable feelings, do not dare to bite hard objects, this is a normal phenomenon, need a period of adaptation process. 2, teeth in discomfort, do not chew too hard food to avoid increased pain, but the right amount of chewing can shorten the discomfort period. 3, choose high performance straight wire orthodontic braces, patients who have the conditions can choose imported braces. 4, it is recommended to use orthodontic toothbrushes, using the correct method of brushing to keep teeth clean and hygienic, which can reduce the accumulation of acid, thereby reducing the discomfort when the teeth move. 5.Select more nutritious and easy to chew and digest food during orthodontic treatment. 6, most of the orthodontic discomfort is within the tolerable range, if there is abnormal pain should be timely follow-up, symptomatic treatment. 7, for the problem of tooth extraction pain. At present, you can choose high performance imported anesthetics, which can completely achieve painless tooth extraction, which only needs to reduce the psychological fear. 8. For a few adult patients, pain medication can be taken appropriately during this period when the pain reaction is heavy.