Abstract: Macrosomia is one of the common fetal complications in obstetrics. The associated high risk factors include high pre-pregnancy body mass index （BMI），excessive increase of body weight during pregnancy and gestational diabetes mellitus. Macrosomia raises the rate of cesarean section. The incidence of severe perineal tear，shoulder dystocia，brachial plexus injury，neonatal asphyxia，death and other adverse maternal and infant outcomes increases，too. Accurate clinical evaluation of macrosomia and timely termination of pregnancy may avoid complications and improve maternal and infant outcomes. The clinical and ultrasonic evaluation and prediction methods of macrosomia，the intervention methods of induced labor and pregnancy outcome were discussed in the current paper.