A person’s dental experience lasts a lifetime, so each treatment for a child should be valued to provide a good foundation for his later dental treatment. Children have their own growth and developmental characteristics, and different mental and behavioral development at different ages requires different approaches to help them complete their treatment. Any behavior that violates the growth and development can affect the smooth progress of treatment and even the physical and mental health of children. Therefore, children’s orthodontic psychology is very important and needs the joint attention of doctors and parents. The main common malocclusions in children are anterior teeth, commonly known as “enamel”, “pocket teeth”, anterior protrusion of upper teeth (buck teeth), crooked jaw, and bad oral habits of children, such as finger sucking, lip biting, etc., which may cause teeth tilting and protrusion. These malocclusions will affect the development of the child’s jaw and face and should be corrected as early as possible. Correction of malocclusion generally requires the use of orthodontic appliances, which can cause discomfort to children. There are many factors that influence a child’s dental visit, and pain is a major factor in causing malocclusion. Some of the common clinical maladaptive behaviors are: uncontrollable behavior, defiant behavior, timid behavior, nervous behavior and crying behavior. Therefore, orthodontists and parents are required to communicate more with children, firstly, to make friends with them, to gain their trust, to tell them about the dangers of malocclusion and the treatment methods and results to be performed, to fully understand and respect them, and to reduce their dental fear and anxiety in order to obtain cooperation. Secondly, we should strive for technical excellence, diagnose and design the malocclusion correctly, develop a reasonable treatment plan, try to truly think of the child, avoid pain and reduce the discomfort of the child during orthodontic treatment. Because children cannot be responsible for their own behavior, orthodontists must communicate more with not only the child, but also with the child’s parents. According to the psychological development of the child, we will work together to achieve a good outcome with half the effort.