Fasting blood glucose 13mmol / L, postprandial blood glucose 17mmol / L, if there are “three more and one less” clinical manifestations, can be diagnosed as diabetes mellitus, diagnosed by the doctor needs to be through the dietary control, exercise therapy, medication and other means of treatment; if the diabetic patient, the blood glucose belongs to the glycemic control does not meet the standard, it should be adjusted in a timely manner! Treatment. Diabetes can be diagnosed when fasting blood glucose ≥7.0mmol/L, or two-hour postprandial blood glucose ≥11.1mmol/L, or random blood glucose ≥11.1mmol/L, or glycated hemoglobin ≥6.5%, which satisfy any one of the above mentioned items and at the same time have the clinical manifestations of “three more and one less”. The treatment methods are as follows: 1. Dietary control: patients should control the total daily energy intake, low sugar, low salt, low fat, small meals. 2. Exercise therapy: Appropriate physical exercise such as jogging, jumping rope, swimming, playing Tai Chi, etc. to control weight. 3. Drug therapy: patients need to follow the doctor’s instructions to take oral glibenclamide, acarbose, metformin and other drugs to control blood glucose, if necessary, insulin injection therapy. For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol/L ~ 7.0mmol/L, non-fasting blood glucose is not more than 10.0mmol/L. Therefore, the blood glucose is not up to the standard of glycemic control, and should be adjusted in a timely manner for treatment, or else diabetic complications are likely to occur. It is recommended that the patient go to the hospital in time.