1, polydactyly (toes), also known as pendulous fingers and toes, belongs to the autosomal dominant hereditary disease, is one of the common malformations in children. Patients with polydactyly, it is obvious at a glance, sometimes manifested as flat and broad fingers, the appearance of polydactyly, only the phalanges or metacarpal bone redundancy, need to diagnose with the help of X-ray film. Treatment is mainly based on surgical excision and shaping, generally simple polydactyly, especially ulnar simple polydactyly, without metacarpal bone and metacarpophalangeal joints, it is appropriate to complete the surgical treatment in infants from 0 to 6 months; compound polydactyly, such as radial compound polydactyly, and central polydactyly, the surgical time can be delayed, but it should be completed before the age of 2 years, in order to help parents to get comforted psychologically at an early date, and the children will not have a Psychological barriers. 2, syndactyly, also belongs to the autosomal dominant hereditary disease. It occurs between the middle finger and the fourth finger, and there are also cases in which 2~5 fingers are connected together, and it is rare for the thumb to merge with the second finger. Bilateral syndactyly accounts for 1/2 of the cases.Treatment: Surgery is the mainstay. The timing of treatment depends on the general health status of the child, the safety of anesthesia and the request of the parents. Generally speaking, if the situation permits, surgery should be performed within 6 months of the child’s age; it can also be delayed, but surgery should be performed within 2 years of age if possible. In cases that require multiple surgeries, the order of surgery is arranged so that correction of bone deformity, correction of bunion and index finger deformity is arranged in the front, and the middle and ring fingers are arranged in the back. 3, other relatively rare such as: toe deficiency, toe dysplasia, giant toe deformity, trigger finger, congenital ring narrowing band syndrome, split hand and other deformities, according to the specific circumstances, more in the pre-school period for surgical treatment. In conclusion: with the improvement of people’s economic and cultural level, the psychological impact of deformity is also getting more and more attention, so it is recommended that children suffering from various deformities should be treated as early as possible. Children with conditions try to go to the local children’s hospital plastic surgery department for treatment, because children’s hospitals in pediatric anesthesia, surgery, care is incomparable to other hospitals, the age of various surgeries will be earlier.