The causes of high blood sugar two hours after meal are mainly as follows: 1, because the diet is not well controlled, the diet is not controlled to the normal amount, and too many carbohydrates and calories are consumed, so it will cause the blood sugar to rise after meal; 2, there is no proper exercise after meal, and such situation will also cause the blood sugar to rise; 3, some patients belong to abdominal obesity, and the fat in the abdomen will produce some resistance to insulin, so it will cause the blood sugar to rise two hours after meal. Therefore, the phenomenon of elevated blood glucose two hours after meal will occur; 4. The adjustment of hypoglycemic drugs is not reasonable enough, so there will be elevated blood glucose two hours after meal. When the blood sugar rises two hours after meal, we should correct the cause. Patients should control the diet and exercise appropriately, and can add drugs to control postprandial blood sugar, such as metformin and bactrim to control postprandial blood sugar.