Post-meal blood glucose generally refers to blood glucose two hours after a meal, and the normal range should be less than 7.8mmol/L. If the two-hour postprandial blood glucose concentration is 7.8mmol/L, the normal range should be 7.8mmol/L. Two-hour postprandial blood glucose concentration generally refers to the blood glucose concentration two hours after the start of eating, and its normal range should be less than 7.8mmol/L. If the two-hour postprandial blood glucose concentration ranges from 7.8 to 11.1mmol/L, then it belongs to impaired glucose tolerance, and if it is greater than or equal to 11.1mmol/L, then it reaches the diagnostic standard of diabetes mellitus. In daily life, both healthy people and patients with high blood glucose should maintain a healthy diet, and follow a low-salt, low-fat and low-sugar diet, which can help maintain stable blood glucose. It is recommended to go to the hospital if you have abnormal two-hour postprandial blood glucose.