In general, fasting blood glucose > 5.8 mmol/L (104 mg/dl) after regular dietary control and > 6.7 mmol/L (120 mg/dl) 2 hours after breakfast or before dinner should be considered for treatment with insulin under the supervision of a doctor. Gestational diabetes mellitus is usually caused by increased glucose demand during pregnancy, increased insulin resistance and insufficient insulin secretion. After diagnosis, blood glucose needs to be controlled by insulin with diet and exercise therapy, strict control of total calorie intake, scientific diet, small and frequent meals. Encourage appropriate exercise during pregnancy, including aerobic exercise and resistance exercise. The duration of each exercise is less than 45 minutes. Pregnant women should monitor their blood glucose regularly and seek timely medical attention when abnormalities are detected.