Normal blood glucose before meals and low blood glucose two hours after meals may be caused by eating too little and exercising too much. If the patient is taking glucose-lowering drugs, or insulin treatment of diabetes, it may be due to the excessive dose of drugs. It should be treated by improving diet, reasonable exercise, and adjusting glucose-lowering drugs. In diet should be balanced meals, each meal energy reasonable distribution, a variety of nutrients reasonably collocation, to maintain the balance of the total calories a day, to avoid a meal overeating, a meal and dieting bad habits. In addition, patients should not exercise too vigorously after meals, and should exercise in moderation. If the patient is taking glucose-lowering drugs or using insulin, low blood glucose two hours after meal may be caused by too large a dose of drugs, and should reduce the dose of glucose-lowering drugs under the guidance of the doctor, or switch to other glucose-lowering drugs. Patients with normal pre-meal blood glucose and low blood glucose two hours after meal should go to the hospital for reasonable treatment under doctor’s guidance.