Floating thumb is a relatively rare congenital hand deformity, which leads to a lack of awareness among many parents who only know that their child has a hand problem, but don’t know what it’s called or how to fix it. Especially in the past, information flow was poor, and many parents had to travel from hospital to hospital in major cities to ask questions. Some parents could not bear to run around with their children, so they consulted everywhere themselves with photos and compiled limited information and treatment plans from different doctors, but the answers they got were either thumbing or metatarsal reconstruction, or only four fingers after surgery, or surgery to remove bone from the foot, which many parents found difficult to accept, and their children grew older and older while waiting like this. This story is not an isolated case, some of the older children with floating thumb who come to my clinic basically have an experience similar to this, the impact of floating thumb on them is not only reflected in the inconvenience of life, but also the psychological level of harm. He had never used his right thumb to write, and he rarely showed his affected hand in front of people. The child was so excited and happy after the surgery that he wrote his name with his thumb for the first time. The thumb function is usually established between the age of 6 months and 1 year, so this is the recommended age for surgery. Also, at this time, the child is too young to remember and has no social circle of his own, so he will not have memories of this deformity in retrospect, and he will not miss out on school or play. The child can grow up just like any other child, without having to go through too much extra hardship.