Cryptic cleft palate is a type of cleft palate, which can only be diagnosed with the following three typical clinical features. 1. Bifurcation of the uvula. Normally, the uvula should be a complete ellipsoid, but in infants with occult cleft palate, there is a bifurcation of the uvula at the end and two pieces are formed. 2. The continuity of the muscles behind the soft palate is interrupted and segmentation occurs. In normal soft palate, both the mucosa and the muscles behind it should be intact, but in cryptic cleft palate, although the mucosa on the surface seems to be intact, the muscles behind the mucosa will have a break in the continuity, and the muscles will appear to be segmented, which needs to be incised in order to be able to observe the situation. 3. Finally, the back edge of the palate bone of patients with occult cleft palate will appear jawbone defects, but the naked eye can not be observed, and must be found with the help of CT examination and other auxiliary means. The clinical manifestations of occult cleft palate are generally the above three points, in which more clinical symptoms need to use auxiliary examination equipment to be able to find. Parents who suspect that their children have occult cleft palate are advised to take their children to regular hospitals for relevant examinations as soon as possible to avoid delaying the condition.