The glucose tolerance test is a test used to diagnose diabetes, and it can be done by pregnant women to help determine blood sugar and clarify whether they have gestational diabetes. Before the glucose tolerance test, pregnant women can make preparations in advance to make the test data more accurate and try to pass it in one go. 1. 2 weeks before the test, pay attention to adjusting the diet properly, do not control the diet too deliberately, a normal diet is enough, but for foods high in oil and fat, reduce eating, increase exercise in moderation, such as slow walking, walking, etc., to help consume sugar and improve the passing rate of the glucose tolerance test. 2. The day before the glucose tolerance test, pay special attention to diet, eat less food with high glycemic index such as white rice, do not drink coffee or strong tea, and forbid eating and drinking after 10 p.m. to avoid affecting the fasting glucose test results; 3. When pregnant women do the glucose tolerance test, pay attention to drinking sugar water slowly, finish it slowly within 3-5 minutes, and walk and move appropriately after drinking. When pregnant women do glucose tolerance test, they should pay attention to the time of blood sampling and testing to avoid failing the glucose tolerance test due to misremembering the time. Pregnant women should pay attention to a low-salt, low-sugar, low-fat diet throughout pregnancy to control blood glucose concentration and reduce the adverse effects on fetal growth and development.