The baby’s congenital right thumb hypoplasia floating thumb, need to improve the function and appearance of the baby’s thumb through surgery, now we use the most advanced surgical method – semi-metacarpal bone grafting reconstruction (SMRT floating thumb reconstruction) to carry out the treatment, after the operation, parents have to follow the doctor’s account of the matters to help the baby for recovery! After the surgery, parents should follow the doctor’s instructions to help their babies to recover and exercise. After years of outpatient review and return visits, the baby’s thumb has recovered well in function and appearance. The thumb occupies 50% of the functions of the hand. The thumb of babies with floating bunions is basically non-functional, and after being treated by hemi-metacarpal bone grafting reconstruction surgery, the thumb will be nicely improved, and the babies will be able to do movements such as palming, pinching, grasping and pinching. It is important for parents to have their floating bunion babies undergo surgery as early as possible because the sooner the surgery is performed, the sooner the function of the thumb will be established.