The role of exercise therapy Exercise therapy can reduce the underlying insulin resistance during pregnancy, is one of the comprehensive treatment measures for GDM, 30 minutes of moderate intensity exercise after each meal has no adverse effects on the mother and child . Exercise therapy method Choose a low to moderate intensity aerobic exercise, or endurance exercise, mainly by the body in the large muscle groups to participate in continuous exercise, commonly used some simple available aerobic exercise such as walking. Exercise time Exercise time can start from 10 min, gradually extend to 30 min, which can be interspersed with the necessary intervals, it is recommended to exercise after meals. The frequency of GDM exercise is generally considered appropriate for the number of exercises 3 to 4 times / week. Precautions for GDM exercise therapy 1, EKG examination before exercise to exclude cardiac disorders, and screening for macrovascular and microvascular complications is required. 2, contraindications to GDM exercise therapy: with severe heart disease and chronic hypertension, placenta praevia, multiple pregnancies, cervical insufficiency, preterm labor or miscarriage, fetal growth restriction, hypertensive disorders during pregnancy, etc. 3. Prevent hypoglycemic reaction and delayed hypoglycemia: exercise after 30min of eating, control the duration of each exercise to 30~40 minutes, and rest for 30 minutes after exercise. Stop exercising if the blood sugar level is lower than 3.3mmol/L or higher than 13.9mmol/L. You should bring some cookies or candies with you when you exercise, so that you can eat in time when there are signs of low blood sugar. 4, the following conditions should be promptly sought medical attention during exercise: abdominal pain, vaginal bleeding, running water, breath-holding, dizziness, severe headache, chest pain, muscle weakness, etc. 5.Avoid exercising in the early morning on an empty stomach before insulin injection.