The best time to repair cleft lip is: the baby with simple cleft lip should be operated at 3-6 months; Babies with bilateral cleft lip should be operated in 6- 12 months; Baby 1-2 years old had cleft palate surgery; The operation of gingival rupture or repair should be performed at the age of 9 to 1 1. The second soft tissue reconstruction of nose and lip should be carried out after hard tissue reconstruction. Generally, the operative age of female children is 14- 16, and that of male children is 16- 18.