Abstract: There are two diabetes types during pregnancy period，one is diabetes with pregnancy，the other is gestational diabetes mellitus（GDM）. Poor glycemic control will make lots of disadvantageous effects to mother and fetus. The safe and effective measures are needed to control glycemic level. Dietary management and exercise therapy can control it to a reasonable range generally. When the glycemic level couldn′t be control very well by dietary and exercise therapy，drug therapy would be taken. Insulin is considered as a safer and effective method for gestational diabetes mellitus，however because of the cost of treatment and compliance issue and so on，oral hypoglycemic agents（such as metformin，glyburide etc） are taken into clinical research areas of health care，at the same time the function of health education treatment can not be ignored. According to individual variability among patients，actively taking the appropriate mode of delivery and postnatal management will help to reduce maternal and fetal risks and improve maternal and fetal prognosis.

Key words: Diabetes, gestational, Food habits, Exercise therapy, Insulin, Drug therapy