The causes of high blood glucose after meals are roughly divided into the following aspects: 1, the diet is not controlled, eat too much, too full or eat too sweet food, resulting in increased blood glucose, so when eating must be strictly in accordance with the diabetic diet to intake, control the diet, calories, sugar should be strictly controlled. 2, did not carry out aerobic exercise, physical exercise, so resulting in high blood glucose after meals. 3, the use of hypoglycemic drugs The wrong choice of substances or insufficient dose or unreasonable collocation, resulting in the increase of blood sugar after meals. Generally, you can use acarbose and voglibose to control postprandial blood sugar, and make sure to use enough dose.