Fasting blood glucose 7.5mmol / L, the value is elevated, fasting blood glucose normal range 3.9 ~ 6.1mmol / L, if the fasting blood glucose reaches 7.5mmol / L, you need to formalize the endocrinology department, a clear diagnosis, and guide the treatment of lowering sugar. 1. If there is no history of diabetes and fasting blood glucose reaches 7.5mmol/L, it is necessary to pay attention to whether there is a cause of acute stress, such as acute myocardial infarction patients who often have a temporary elevation of blood glucose, at this time it is recommended to closely monitor blood glucose, pay attention to low glycemic diet, and when the stress is eliminated, the blood glucose may return to normal in some patients. 2. If there is no other cause of stress, it is recommended to immediately go to the endocrine clinic for further examination to determine whether the diagnosis of diabetes mellitus is made. If there is a clear history of diabetes mellitus in the past, and the fasting blood glucose is 7.5mmol/L, it is necessary to go to the Department of Endocrinology to adjust the hypoglycemic drugs. Commonly used hypoglycemic drugs are metformin, glipizide, insulin and so on. Through regular medication, the blood sugar is controlled in the ideal range. In particular, we should pay attention to diet control, control the intake of fats, sugar, etc., and also with appropriate exercise, such as walking, swimming, jogging, etc. to increase consumption. If abnormalities in blood glucose are detected, it is recommended to go to the Endocrinology Department of a regular hospital for timely consultation.