先天性唇裂及腭裂畸形的发生是由于口腔腭突内的中胚叶组织在胚胎早期、妊娠前三个月时发生发育暂停所致。唇裂畸形和腭裂畸形可同时发生,亦可单独发生其发生率约为1‰左右,二者皆为口腔颌面外科常见的手术治疗疾病。 Congenital cleft lip and cleft palate malformations occur due to the omentum in the midbrain palate within the early embryo, the first three months of pregnancy occurs due to suspension of development. Cleft lip deformities and cleft palate deformities can occur simultaneously, but also the incidence of its occurrence is about 1 ‰, both of which are common surgical treatment of oral and maxillofacial surgery disease.