After the treatment of gestational diabetes with diet and exercise, if the blood glucose is well controlled, there are no comorbidities such as gestational hypertension, excessive amniotic fluid or fetal growth restriction, and the fetus has good intrauterine growth and no hypoxia, most of them can pass the whole pregnancy smoothly, and the pregnancy is usually terminated at 39-40 weeks. If the blood glucose is still not well controlled after diet and exercise therapy, or even insulin therapy, and if there is a combination of vascular disease, severe pre-eclampsia, severe infection, fetal growth restriction, fetal distress, etc., then individualized treatment is needed to determine the fetal development early, and if necessary, fetal lung maturation treatment should be given before terminating the pregnancy.