Congenital cleft lip and palate is a relatively common congenital developmental malformation that manifests as a cleft of varying severity in the midline area of the palate. Although cleft palate can occur alone, it is most often associated with congenital cleft lip. It causes many adverse effects on the patient, including appearance, swallowing, speech, and psychological aspects. I. Etiology The exact cause and pathogenesis of the developmental and fusion disorders of the lip and palate are not yet fully understood. According to a large number of experimental studies and epidemiological surveys, the results suggest that it may be due to the influence of multiple factors rather than a single factor. In general, it can be divided into two aspects: genetic factors and environmental factors, and is related to nutrition, genetics, infection and endocrine factors. 1, genetic factors Some patients with cleft lip and palate can be found in their immediate or collateral relatives with similar deformities, thus it is believed that cleft lip and palate deformities have a certain relationship with genetics. Genetic studies also believe that cleft lip, face and palate are polygenic genetic diseases. 2, environmental factors Mainly refers to the environment in which the embryo grows and develops, the entire physiological state of the mother constitutes the environmental conditions for the development of the embryo. Therefore, in the first trimester, when the physiological state of the mother is attacked or disturbed, it may affect the growth and development of the embryo’s jaw and face. The soft palate is only cleft, sometimes limited to the uvula. It is not divided into left and right, usually not accompanied by cleft lip, clinically more common in women. 2, incomplete cleft palate also known as partial cleft palate. Complete cleft of the soft palate is accompanied by partial cleft of the hard palate; sometimes accompanied by unilateral incomplete cleft lip, but the alveolar process is often intact. This type is also not distinguished from left and right. 3.Unilateral complete cleft palate The cleft is completely cleft from the uvula to the incisal foramen, and is oblique to the alveolar process and connected with the alveolar cleft; the edge of the cleft on the healthy side is connected with the nasal septum; sometimes the cleft disappears and only the cleft remains, sometimes the cleft is very wide; often accompanied by ipsilateral cleft lip. Bilateral complete cleft palate often occurs at the same time with bilateral cleft lip, and the cleft is in the anterior maxillary part, each of which is obliquely cleft to both sides and reaches the alveolar process; the nasal septum, anterior maxillary process and anterior lip are isolated in the center. III. Treatment The main purpose is to restore normal or near-normal articulation-based physiological functions. When cleft palate is accompanied by cleft lip, cleft lip repair surgery should be performed first, which helps to narrow the width of the cleft palate and can reduce the difficulty of the subsequent cleft palate repair. Speech therapy is often required after cleft palate surgery to further develop the surgical effect and achieve better speech outcome. Postoperative care 1, cleft palate surgery is completed, the tracheal tube should be removed only after the child is awake. 2.If secondary bleeding occurs at the edge of the incision, the bleeding can be stopped according to the situation. 3.After the child is fully awake for 4 hours, a small amount of sugar water can be fed and observed for half an hour, and a liquid diet can be fed when there is no vomiting.