Pregnant women with fasting blood sugar of 6.9 mmol/L over normal values are more serious. Gestational diabetes is diagnosed when a pregnant woman’s fasting blood sugar exceeds 5.1 mmol/L. The main treatment for pregnant women with high blood glucose is insulin therapy and lifestyle intervention. For pregnant women, the normal value of fasting blood glucose is between 3.1 and 5.1 mmol/L, while 6.9 mmol/L is beyond the normal level. Diabetes is diagnosed when the fasting blood glucose reaches or exceeds 5.1mmol/L, or when the blood glucose value reaches or exceeds 10.0mmol/L one hour after oral glucose, or when the blood glucose value reaches or exceeds 8.5mmol/L two hours after oral glucose, when the oral glucose test is performed at 24-28 weeks of pregnancy. When high blood glucose in pregnancy occurs, insulin should be used to lower blood glucose under the guidance of the doctor; at the same time, diet should be controlled, calorie intake should be controlled without affecting the development of the fetus, and small and frequent meals should be taken as much as possible; in addition to ensuring a certain amount of exercise. When there is pregnancy blood sugar 6.9mmol / L should go to the regular hospital in time, under the guidance of the doctor’s treatment.