Gestational diabetes mellitus at 40 weeks requires induced termination of pregnancy. Gestational diabetes macrosomia, abnormal fetal development, and preterm labor can have a significant impact on both the mother and the fetus. That is why it is important for the timing of labor and delivery. For pregnant women with gestational diabetes who do not need insulin treatment and whose blood glucose control is up to standard, if there are no maternal or fetal complications, they can wait until the due date, and if labor is still not imminent, they can be induced to terminate the pregnancy. If insulin treatment is required for gestational diabetes, if the blood glucose control is good and there are no maternal or child complications, the pregnant woman can be closely monitored after 39 weeks of pregnancy to terminate the pregnancy. Unsatisfactory glycemic control or maternal and fetal complications should be promptly admitted to the hospital for observation, and the pregnancy should be promptly terminated if the fetus is abnormal or the pregnant woman is in poor condition. Pregnant women with gestational diabetes mellitus need to do a good job of pregnancy management, regular measurement of blood glucose, fetal movement counts, listening to fetal heart sounds and so on. Once the fetal movement decreases or the fetal heart sound changes should immediately consult the doctor.