The main plastic methods of cleft lip are: 1, cleft lip. The characteristics of cleft lip are: there are grooves or scars beyond the vertical length of upper lip, all traces of red lip, defects of white lip and different degrees of vertical shortening of upper lip. Nasal deformities can occur, and sometimes they are even more serious than lip problems. Surgery is usually needed, but careful operation must be performed during the operation to prevent postoperative deformity from being more serious than congenital malformation. 2. Unilateral incomplete cleft lip All unilateral incomplete cleft lip have different degrees of upper lip crack, but the same feature is that the nasal floor or Simonart area is complete. It can be repaired by rotating propulsion. Although the degree of alar deformity is different and the degree of motion reduction is different, it can be done at the same time as cleft lip repair. 3, unilateral complete cleft lip, unilateral complete cleft lip is characterized by cracks in the upper lip, nasal floor, alveolar (from the beginning of the palate). Although secondary cleft palate does not necessarily occur, complete cleft lip is often accompanied by complete cleft palate. The key to evaluate unilateral complete cleft lip is the position of alveolar bone and the vertical height of the affected lip. Generally, there are four positions (1) where the alveolar bone is narrow and does not collapse. (2) Stenosis with collapse. (3) The gap is wide and does not collapse. (4) The gap is large and there is collapse. The width is determined by the alveolar bone length at the base of the corresponding alar. Collapse refers to the distance between the lingual side of the affected maxilla and the ideal dental arch calculated by the healthy dental arch.