Gestational diabetes mellitus is recommended to eat low glycemic index, nutrient-rich food, control blood glucose stabilization at the same time should ensure that the pregnant woman and the fetus intake of adequate nutrition. When blood glucose is too high, insulin can be used for treatment, and oral hypoglycemic drugs should be used with caution. Pregnant women with gestational diabetes are advised to mix and match coarse and fine staple foods, and consume coarse grains with a low glycemic index, such as corn, buckwheat, quinoa, etc. Moreover, dietary fiber is richer and more satiating, which is conducive to the control of blood glucose. Fruits can choose low-sugar fruits, such as apples, oranges, oranges, grapefruit and so on. Protein intake is recommended to choose high-quality protein, such as beef, fish, lean pork, milk, beans and soy products, eggs and so on. Small meals and moderate exercise are recommended to control weight gain. Pregnant women with gestational diabetes mellitus are advised to go to the hospital in time for regular review.