Postprandial 2-hour blood glucose 15mmol/L has exceeded the normal range, generally speaking, is serious, it is recommended to seek timely medical attention. Normal people 2 hours after meal blood glucose should be less than 7.8mmol/L, and diabetic patients 2 hours after meal blood glucose is generally required to control <10mmol/L, 2 hours after meal blood glucose 15mmol/L has exceeded the normal range, it is recommended to listen to the doctor's advice to actively treat. Diabetic patients should strictly control their diet, dietary intake of cakes, sugary drinks, etc. is not recommended, and the staple food of each meal should be quantitative. Appropriate activities after meals are very helpful in lowering postprandial blood glucose, such as walking and yoga. After dietary control and exercise, if you still can't control it after meal, you need to take oral hypoglycemic drugs, such as metformin, glimepiride, etc. as prescribed by your doctor. If oral hypoglycemic drugs still cannot reduce blood sugar, subcutaneous insulin injection should be used to reduce postprandial blood sugar under doctor's guidance. When abnormal blood glucose levels are detected, prompt medical attention is recommended.