I have seen many children with floaters in my clinic, including those who are already in school or are preparing to go to school, as well as newborn babies, especially infants. Many new parents do not have a good understanding of floaters, and when they come to the clinic, they ask me why babies get floaters. Floating finger belongs to the congenital hand deformity disease, the cause of floating finger is not a clear conclusion, may be related to these factors, such as the mother’s lack of nutrition during pregnancy, smoking or passive exposure to second-hand smoke, medication, viral infections, physical and chemical factors, environmental pollution and so on, which may lead to deformity of the baby. In fact, we do not need to dwell on the cause of the problem, because the baby is already floating finger, it is not meaningful to investigate the cause of the disease, the most important thing now is to carry out surgery as early as possible when the baby meets the surgical requirements, through the semimetacarpal bone grafting reconstruction (SMRT floating bunion reconstruction) to solve the problem of floating finger, and to improve the function and appearance of the thumb as early as possible.