Ninety-six cases of fetal macrosomia have been tested to focus on the factors necessary to select women running the risk of delivering macrosomic fetuses. The results of these studies are the following ones: a) pregnant women with pathology are multiparas; b) they are usually characterized by peculiar weight increase in pregnancy; c) they have gone beyond pregnancy term; d) they have previously delivered macrosomic fetuses. The Authors focus on the necessity to anticipate diagnosis and to plan caesarean section in order to avoid the traumatic lesions this kind of babies are frequently affected by.