Cleft lip and palate is the most common congenital malformation of the oral and maxillofacial region. In some newborns, the upper lip is split at birth, on one or both sides, making the upper lip bifid or trifid, commonly known as “harelip”, which is medically known as cleft lip. If the upper teeth and tongue are split, commonly known as “wolf throat”, medically known as cleft palate. The causes of cleft lip and palate are not completely clear so far, but the possible factors are: 1, nutritional deficiency; 2, drug influence; 3, emotional influence; 4, viral infection; 5, genetic factors; 6, radiation energy. In order to obtain satisfactory treatment results, the timing of the revision surgery is very important. At present, unilateral cleft lip repair surgery advocates cleft lip repair at 3 months after birth, and bilateral cleft lip surgery is mostly performed at about 6 to 12 months. The best age for cleft palate repair surgery is 1-2 years old. Third, preoperative and postoperative precautions start spoon feeding the baby 2 weeks before the surgery to make it accustomed to this feeding method and facilitate postoperative feeding. Because once sucking is done after surgery, the muscles that were pulled together and sutured during surgery will be contracted and will be easily split. After cleft lip surgery, gently wipe the wound with 1.5% hydrogen peroxide solution or 3% boric acid ethanol mixture in time to keep the incision clean and avoid crying in the child. Use spoon or dropper feeding after surgery, and do not sucking. Apply antibiotics routinely after surgery to prevent infection. If the incision is not infected after cleft lip surgery, the sutures can be removed generally 6~7 days after surgery. The red lip and intraoral sutures can be allowed to fall off naturally.