Fasting blood glucose level is normal for 3.9~6.1mmol/l, 2 hours postprandial blood glucose normal should be <7.8mmol/l, 7.7mmol/l before meal, 14.1mmol/l after meal has exceeded the normal range, it is serious, there may be diabetes mellitus or diabetes mellitus blood glucose control is not good, it is recommended that you go to the hospital for consultation, and comply with the doctor's instructions for medication. Fasting blood glucose is normal for 3.9~6.1mmol/l, 2 hours after meal blood glucose should be normal <7.8mmol/l, blood glucose abnormality includes impaired fasting blood glucose, impaired glucose tolerance and diabetes mellitus. Impaired fasting blood glucose refers to fasting blood glucose 6.1~7.0mmol/l, impaired glucose tolerance refers to 2 hours after meal or random blood glucose level 7.8~11.1mmol/l, if the fasting blood glucose level is greater than or equal to 7.0mmol/l, and 2 hours after meal or random blood glucose level is greater than or equal to 11.1mmol/l, then it is possible to be diabetes. If abnormal blood glucose is detected for the first time and the diagnostic criteria for diabetes have not yet been met, it can be controlled by diet and exercise, and the fasting blood glucose and 2-hour postprandial blood glucose can be rechecked, and if it is still abnormal, medication needs to be initiated. The drugs that can be chosen for lowering blood glucose include Glimepiride, Repaglinide, Metformin, Acarbose, etc. In addition to drugs, insulin can also be chosen. If abnormal blood glucose is found, it is recommended to go to the hospital and take medication as prescribed by the doctor to avoid delaying the condition.