The optimal time for surgery for newborns with polydactyly is usually between 6 months and 3 years old. Depending on the type of polydactyly such as soft tissue polydactyly, simple polydactyly or compound polydactyly, you need to talk to your doctor about the timing of the surgery. 1. Soft tissue polydactyly: In soft tissue polydactyly, there is no corresponding bone in the extra finger, it is a soft tissue growth, so it can be treated surgically in the early newborn period. 2. Simple polydactyly: In simple polydactyly, there are normal phalanges, tendons and blood vessels in the extra fingers, which have imperfect partial functions, so the child can only be operated on at around one year of age. 3. Complex Polydactyly: In the case of a complex polydactyly with more complete function, surgery is required until the child is about three years old. Since newborns can not cooperate during the surgery and need to take general anesthesia, so the older the child the lower the risk of surgery, but also need to be careful not to bring psychological burden to the child to avoid causing the child to have low self-esteem, so when the time is ripe for surgery, the earlier the surgery the better.