Children who develop a misaligned bite and a crooked face need to be seen in a timely manner to determine whether the cause is dental, functional or osseous, and to take appropriate treatment measures for the cause. Specific details are as follows: 1. For dental and functional malocclusion, the triggering factors include bad habits and lateral chewing. After removing the causative factors, simple orthodontic treatment can be performed; 2, the treatment of bony factors leading to malocclusion is more difficult and requires orthognathic surgery and combined orthodontic and orthognathic treatment.