Down’s child head shape is a special head and facial features exhibited by the congenital disease Down’s syndrome, Down’s syndrome is a common trisomy, caused by chromosomal abnormalities. three chromosomes on chromosome 21, the extra chromosomes disrupt the balance of genetic material, is the root cause of fetal malformations. The specific manifestations are: 1. short head shape, short anterior and posterior diameters flattened at the back of the head, flush with the back of the neck neck is more normal, thicker and shorter, the brain weight is lower than the average, IQ is generally lower than normal, a few smarter people can reach the normal level. 2. widened eye distance between the eyes, small eye fissure, the outer corner of the eye is obviously tilted outward and upward, the eye protrudes outward, golden dots on the pupil, superfluous skin in the inner corner of the eye, often accompanied by According to the survey, more than 60% of children with Down syndrome have vision problems. 3. The ears are small, with almost no earlobe shape, such as shells. Due to the narrow and blocked ear canal, ear pain often occurs.4. The nasal bridge is flat, the nostrils are upturned, and the nasal passages are narrow and easily blocked.5. The lips of the mouth are thickened, easily dry and cracked, the mouth is narrow, the tongue is cracked, and the teeth are unevenly arranged and small.