This baby came straight in for surgery, but because I happened to be sitting in the clinic when I was preparing for admission, I came back in with the baby before admission. The baby’s hand had a polydactyly of the thumb, which had an overall okay finger shape. The surgical plan was to remove the extra finger and adjust the lateral collateral ligaments, tendons, and joint capsule of the thumb. However, considering that the thumb may be deviated after the surgery, some osteotomies will be done during the surgery. The whole procedure is to reconstruct a new finger body with both function and shape on the original condition of the thumb. However, parents are still very worried about their baby’s future. The main concern is the genetic problem, and they are afraid that their baby’s offspring will also have this polydactyly. It is true that polydactyly has a genetic component, but the chances of inheritance are not 100%. If there is a precedent of polydactyly in the parents’ family, the chances of the baby’s offspring inheriting polydactyly may be greater, but if no one in the family has had polydactyly and the baby is the first case, then the chances of this inheritance are very small and parents need not worry too much about it. In addition to genetic factors, if you have had a cold or medication during pregnancy, or exposure to second-hand smoke, formaldehyde and other harmful substances in pregnancy can also lead to the emergence of polydactyly, so if you want to reduce the chances of your baby having a polydactyly offspring, then you can pay more attention to eugenics.