The glucose tolerance test is a test to check if a pregnant woman has combined gestational diabetes and can be done at the hospital between 25-27 weeks of pregnancy. First, the blood glucose is checked on a fasting basis, then 75g of sugar is drunk and blood is drawn 1-2 hours later to test the blood glucose. If the blood glucose exceeds 10mmol/L 1 hour after taking 75g of sugar by mouth, or 8mmol/L 2 hours later, and if the fasting blood glucose exceeds 5.1mmol/L, then it means combined gestational diabetes. At this time, the first thing to do is to control the diet, you can exercise appropriately, and if the effect is not good, you need to control blood sugar with insulin.