When I first met this child, I thought he was very well behaved, he didn’t cry and didn’t make a fuss, he was very cooperative, he played happily with whatever he was holding, and his little hands couldn’t be idle for a moment. When he recently came for a review, I don’t know if he was wearing too many clothes, but he felt that he had grown flesh and was white and chubby, and his smile was especially cute. This child had mirror-shadow hands, an incompletely functioning thumb, and an undesirable shape. In this case, we first need to solve the shape problem. Through the first surgery, the child has a relatively normal thumb shape and the thumb is placed in a more ideal position to the palm. For the second surgery, we will see how well the child recovers the function of the thumb during daily exercise, and then design the second stage of functional restoration surgery based on the existing function.