Diabetic 2-hour postprandial blood glucose 13.3mmol/L is generally more serious. Two-hour postprandial blood glucose generally refers to the blood glucose concentration in two hours from the first bite of food, the normal range should be less than 7.8mmol/L, diabetic patients are recommended to control two-hour postprandial blood glucose within 10mmol/L, so diabetic patients with two-hour postprandial blood glucose of 13.3mmol/L has been more than the target range of control. If long-term poor blood sugar control may induce diabetic nephropathy, diabetic retinopathy, diabetic foot, various infections and other complications, jeopardizing the patient’s health, so the 2-hour postprandial blood glucose 13.3mmol/L diabetes is generally more serious. Diabetic patients with 2-hour postprandial blood glucose of 13.3mmol/L should go to the hospital and ask the doctor to make a judgment and give a treatment plan.