Fasting blood glucose 7.5, glycated hemoglobin 5.5, need to clarify whether the diabetes mellitus, usually can adjust the diet and exercise to control blood glucose, if necessary, under the guidance of the doctor to use hypoglycemic drugs. Fasting blood glucose 7.5mmol / L is greater than the normal value, glycated hemoglobin is normal, but can not exclude diabetes, can monitor the 2-hour postprandial blood glucose or improve the oral glucose tolerance test to clarify the diagnosis. Patients should develop good dietary habits, regular exercise, regular monitoring of blood glucose, when exercise, dietary treatment of blood glucose still can not meet the standard can be under the guidance of the physician oral metformin, acarbose and other hypoglycemic drugs. Diabetes is a common disease that threatens human health and should be detected and treated early. We should advocate reasonable diet, regular exercise, improve lifestyle, prevent and delay the occurrence of diabetes.