Postprandial blood glucose generally refers to the 2-hour postprandial blood glucose, diabetic patients with blood glucose control standards is less than 10mmol/L 2 hours after meals, so diabetic patients with postprandial blood glucose of 8.4mmol / L in the control target, not very high. According to the 2020 edition of China’s Type 2 Diabetes Prevention and Control Guidelines, for diabetic patients, the control goal: the ideal blood glucose for adult patients is fasting blood glucose: 4.4-7.0mmol/L, non-fasting blood glucose <10.0mmol/L, glycated hemoglobin <7.0%; for older patients with type 2 diabetes mellitus, blood glucose control standards can be appropriately relaxed, in order to reduce the possibility of hypoglycemia episodes. Postprandial 8.4 mmol/L in diabetic patients is a state of control, and can continue the current glucose-lowering treatment program, increasing the amount of drug use, with an increased risk of hypoglycemic episodes. Diabetic patients with postprandial 8.4mmol/L is in the ideal range, if you want to increase or decrease medication, you should consult a medical professional and make adjustments under the guidance of a doctor, blindly using medication has great risks.