When a diabetic patient has high blood glucose after a meal, he or she can be treated comprehensively by controlling diet, increasing exercise, and adjusting the glucose-lowering regimen. High postprandial blood glucose in diabetic patients may be caused by dietary factors or improper use of hypoglycemic drugs. Therefore, when diabetic patients have high postprandial blood glucose, they should pay attention to controlling the total calorie intake of food, controlling the intake of carbohydrates, and try to choose low-sugar, low-fat and low-salt foods, such as various green vegetables, coarse grains, chicken, duck, fish, eggs and milk. Some studies show that regular exercise is conducive to improving insulin resistance, which can play an auxiliary role in controlling blood glucose; in addition to paying attention to diet and exercise, diabetic patients can also follow the doctor’s instructions to control postprandial blood glucose by taking oral acarbose or injecting short-acting insulin. Diabetic patients with high postprandial blood glucose are advised to consult a professional doctor for treatment.