There is no optimal treatment for polydactyly in children, and it is usually treated by surgery. Children’s polydactyly generally refers to a superfluous finger other than the normal finger, which is caused by congenital developmental abnormalities, and the extra finger usually has no function, and the treatment is mainly based on surgical excision, and the earlier the time of surgery, the better the correction of the deformity, and the smaller the impact on the growth and development in the future, and the greater the possibility of restoring to the normal appearance. Due to the diversity of polydactyly, the surgical methods are also diversified, clinically there are simple polydactyly, compound polydactyly, simple polydactyly, such as ulnar simple polydactyly, there is no metacarpal bone, metacarpophalangeal joints redundancy, it is appropriate to surgical treatment in infants in 3~6 months, to do polydactyly excision and local dermatoplasty. Complex polydactyly, such as radial complex polydactyly, central polydactyly and syndactyly, etc., complete the surgery before the child is 2 years old, complex polydactyly to excise the polydactyly, redundant metacarpal bone full excision or part of the excision, and sometimes need to carry out the correction of joints and bone deformities, articular ligament repair, dermatoplasty and so on. Children with polydactyly are recommended to go to a regular hospital for examination, after which a specialized doctor will decide on the treatment plan.