Blood glucose 7.4mmol/L is high if it is fasting blood glucose, and normal range if it is 2 hours after meal. The normal value of fasting blood glucose is between 3.9-6.1mmol/L. Blood glucose 7.4mmol/L has reached the diagnosis standard of diabetes, and it is recommended that the blood glucose level two hours after meal can be measured again. If the blood glucose level two hours after meal is not particularly high, not more than 11.1mmol/L then you can first do without medication and carry out diet and exercise control. In the diet, we should pay attention to a light diet, avoid eating fried and deep-fried food, and avoid drinking porridge, eating noodles and other easily absorbed food. In addition, half an hour after the meal to exercise for half an hour, mainly aerobic exercise, you can choose such as jogging, swimming, cycling and other sports. Must be persistent, persistent to achieve results. If, on the basis of diet and exercise control, blood glucose still cannot reach the standard, medication is needed.