Acarbose is an oral hypoglycemic agent commonly used in the treatment of diabetes. Acarbose is used to lower postprandial blood sugar by inhibiting intestinal glycosidase activity and delaying carbohydrate absorption. The effects and side effects of acarbose are as follows: a. Acarbose can reduce postprandial blood sugar with precise efficacy and little effect on fasting blood sugar, and acarbose delays the absorption of intestinal carbohydrates, which can play the role of eliminating peaks and valleys and reducing blood sugar fluctuations, and can be used in combination with other oral hypoglycemic drugs and insulin. Secondly, acarbose is taken with the first meal at mealtime, and the chewing effect is better, and it mainly works locally in the gastrointestinal tract, and does not absorb into the blood with little effect on liver and kidney function. Third, acarbose delays the absorption of intestinal carbohydrates, which can lead to enhanced bacterial spoilage and increased intestinal gas production, and can have the side effects of abdominal distension, abdominal pain and diarrhea, which can be relieved by itself after taking for a period of time.