The difference between cleft lip and cleft lip and palate: First, the definition is different. Medically, cleft lip is defined as cleft lip caused by congenital diseases or excessive internal heat. Children can't have perfect lips like normal people, which is usually manifested by one or both lips cracking. However, cleft palate is a crack in the upper part of the mouth, or a crack in the whole mouth. Second, the repair time is different. Although both of them are particularly serious diseases, there are still some benefits as long as they are repaired by surgery. Generally speaking, in medicine, the best time to repair children with cleft lip is 2 months after birth. However, we must be cautious about cleft palate. The best time is to operate within half a year after the child is one year old, which means that the risk of repair is different. Third, the operating principle is different. Generally speaking, in medicine, the trauma of cleft lip is relatively less than that of cleft palate, so the surgical principle for cleft palate is relatively conservative. Therefore, although many children with cleft palate have undergone repair surgery, there are still some hidden dangers in postoperative recovery. However, children with cleft lip will not be so serious. Generally, it can be recovered within half a year after operation, and then it can be suppressed with drugs.