The glucose-lowering principle of Acarbose is that it can inhibit the activity of alpha-glucosidase in the small intestine, slow down the degradation of glucose from food and its absorption into the blood, thus lowering postprandial blood glucose and causing the average blood glucose value to fall. Acarbose is a hypoglycemic drug that can be used to treat type 2 diabetes mellitus under dietary control, as well as to lower postprandial blood glucose in people with impaired glucose tolerance. Major adverse reactions: gastrointestinal distension, increased bowel sounds, occasional diarrhea, abdominal pain, and rarely, skin irritation may occur. Contraindications: It is contraindicated in those who are allergic to the product, children under 18 years of age, pregnant women, severe gastrointestinal flatulence disease, gastrointestinal absorption disorders, severe renal dysfunction, and caution in lactating women. Precautions: the drug should be swallowed whole before meals or chewed with the first few bites of food during meals; liver enzyme indicators need to be monitored 6~12 months before use; if hypoglycemic reaction occurs, need to be corrected with glucose, should not be used with sucrose; avoid carbohydrates within 4~6 hours after taking an overdose of the drug. If the patient is not feeling well, the drug should be used under the guidance of a specialist in a regular hospital, and it is strictly prohibited to use the drug privately, so as not to cause serious adverse reactions.