Parents often ask when is the best time to operate on multiple fingers. In fact, there is no absolute “best time” for surgery, but at most there is a “golden time”. The first “golden time” – 6 months As long as the child’s physical condition is good, normal development (weight ≥ 6kg), for simple polydactyly, generally in the child about 6 months can do the operation; and for complex types of polydactyly, the operation can be delayed until the child is 1 to 2 weeks old, the operation can be delayed until the child is 1 to 2 weeks old. can be delayed until the child is between 1 and 2 weeks old. When the child is 6 months old, the basic functions of the hand begin to be established, the anatomical structure of the fingers is clear, and in addition, with the normal development of the weight of the standard, the basic conditions of anesthesia can be met, and the anesthesia will be safer. By completing the surgery at this time, the child’s affected finger can recover and grow rapidly after the surgery, and the thumb function can also be established quickly, thus obtaining a perfect hand function. This is a one-year-old baby with polydactyly. His condition was complicated because he had not only bone and joint abnormalities, but also tendon and skin abnormalities. Even though he came to us “late”, it was not practical to do the surgery earlier, so I suggested that it be done as soon as possible. The surgery is now complete, and the aesthetics and function of the finger are relatively good, but it would have been better if the surgery had been done when the child was about six months old. For this child, even though he missed the “golden time” for surgery, timely treatment may be the “best time”. Polydactyly, too young or too large Polydactyly, not simply the excess finger removal on the line, more to rebuild the affected finger’s anatomical structure and function. First, the soft tissues of the finger, especially the tendons, should be repaired and preserved to avoid nerve damage. Secondly, the bony problems have to be corrected and then the ligaments and joint capsule have to be repaired. In the case of complex polydactyly, the repair is more difficult. If the age is too young, the anatomical structure of the affected finger is not clear, which will increase the difficulty of intraoperative reconstruction. In addition, the problem of bone development, too much retention will lead to localized facet protrusion with age, and too little retention will destroy the growth plate of the bone, which will lead to unbalanced growth on both sides and skewing. In other words, the earlier the surgery is performed, the higher the chance of finger deviation is likely to be. At too old an age, the redundant fingers compete for position and nutrients due to the development itself, which can easily lead to poor development of the healthy fingers. In addition, the child’s fear of surgery will be more severe, and he or she will be relatively slow to rehabilitate after surgery. In conclusion, the timing of surgery for polydactyly depends on the child’s specific condition. It is not advisable to operate on a child who is too young or too old, but rather on what is appropriate for the child. In addition, parents must choose a suitable treatment organization and doctor for their children.