The baby was born with no abnormal appearance, but because the baby had difficulty feeding and had choking symptoms, when the baby went to the pediatrician, the doctor told the parents that the baby had a “recessive cleft lip and palate” after careful examination. So what is recessive cleft lip and palate? Does it need to be treated? Invisible cleft lip is an infant disease that affects children greatly, but some babies have invisible cleft lip but their parents don’t know about it, in fact, invisible cleft lip is a cleft lip condition that is not easily detected. The occurrence of this condition in newborns is very high and there are many reasons for this phenomenon, genetics and a large number of birth ages in pregnant women can lead to this condition. What is recessive? It is one of the mildest degrees. It is manifested in appearance by an uneven lip arch line, a depression on the white lip (especially noticeable when pouting), a slight collapse of the ipsilateral nostril, a slight deviation of the nasal minors, and the disappearance of the ipsilateral human mid crest. It is because it is one of the mildest types that many parents who cannot bear to see their children suffer have doubts about whether they should have surgery on their children or not. So the first answer to everyone is: surgery is needed! The reasons are as follows: 1, occult is also a deformity of the upper lip, due to the existence of the deformity, there are abnormalities in the continuity or attachment of the upper lip muscles, so with the growth and development of the child, the current deformity of the lip and nose may be aggravated day by day with age. 2, implicitly brought about by the abnormal appearance of the lip under static and dynamic, and the same as the general may lead to abnormal psychological development of the child, the presence of low self-esteem, shyness, etc. in social, once such, and then to correct the psychological may be far more difficult than this physical deformity. Since we have to undergo surgery, what age should we do it? For the age of surgery, we believe that because the deformity is mild and the impact on the lip, nose and maxilla is small, parents can choose to schedule the surgery for their child between four months and preschool age on their own. Generally, it should not be after school age, mainly because it is a more important time for the child’s psychological development. Regarding the surgical approach, we mostly use an incision in the mucosa of the oral cavity (the “intraoral incision”), unless the lip skin indentation is very obvious in terms of color, etc., and we choose the traditional external incision. The advantage of the intraoral incision is that only about 3mm of the skin is visible. Although the intraoral incision makes the surgery more difficult, it can be done very well for lip and nose deformity correction as well as reconstruction of the human mid crest. Occult cleft lip and palate, although mild, can develop uncontrollably during the baby’s growth if left untreated. Once detected, it is still recommended to see a plastic surgeon to identify and decide if treatment is necessary.