There is a series of treatments for cleft lip and palate. The purpose of treatment is to restore the normal shape and normal language function of the upper lip. In order to obtain satisfactory surgical results, the timing of plastic surgery and prosthetic surgery is very important. At present, it is recognized at home and abroad that the best operation time for cleft lip is 3 months after birth and the best operation time for cleft palate is 18 months after birth. Different degrees of nasal deformities often occur after cleft lip surgery, that is, the cleft nostril is flat, collapsed and the tip of the nose is crooked. Therefore, nasal deformity correction should be done at the age of 8. In addition, children with cleft lip and palate often have irregular maxillary teeth and abnormal fetus, that is, orthodontic treatment should be carried out at the age of 12.