Many parents of children with Mirror Shadow Hand do not know what it is and come to the clinic only to realize that their child’s condition is Mirror Shadow Hand. What is mirror image hand? Mirror’s shadow hand is characterized by the absence of a thumb on the affected hand, and the similarity in the shape of the fingers on both sides of the hand, which grows symmetrically. The treatment of mirror image hand is relatively complicated, and the most important thing we can do for a child with mirror image hand is to build a relatively complete and functional thumb. We just operated on a child with mirror image hand some time ago, and after the operation, the appearance of the child’s hand changed significantly from before the operation. This child had mirror image hand, where the thumb was a finger like the index finger, and from the angle of the middle finger, the two sides were the same, like looking in a mirror. Mirror shadow hand should be operated as early as possible, and surgery is recommended at 6-8 months of age. This is because not having a thumb when the child should be establishing thumb function is a very troublesome thing. A child with mirror shadow hand can only pinch and has no opposite palm function, so we treat mirror shadow hand by removing the extra fingers and rebuilding the shape and function of the thumb. After the surgery, the child has a thumb with a normal shape and the functions of opposite palm, pinching, pinching and gripping.