Many mothers and fathers of babies with floating bunions ask this question, saying that their own hands and those of their children’s grandparents are normal, so why do their babies have floating bunions? For a condition like floating bunion, we do not consider genetic factor as the key factor to consider, but more of the interference of external factors, such as accidentally catching a cold and having a fever, taking medication, being exposed to radioactive substances, or smoking, etc. are all possible. But so far, it is difficult for us to summarize a very exact causative factor, we can only suggest that we try to keep our body healthy, physically and mentally happy during the preparation and pregnancy, do not contact with toxic and harmful substances, and avoid the interference of external factors.