High fasting blood glucose may be caused by physiological factors such as emotional excitement, or it may be caused by diabetes, infections, etc. High fasting blood glucose caused by disease factors generally requires active treatment. 1. If high fasting blood glucose is caused by over-excited emotions, exercise and other factors, it is recommended to monitor the fasting blood glucose again after the emotions have been stabilized, at this time the blood glucose level can generally return to normal, if the fasting blood glucose is still high, it is recommended to seek medical attention. 2. If high fasting blood glucose is caused by diabetes, it is generally necessary to use hypoglycemic drugs for treatment on the basis of diet and exercise therapy, such as metformin and insulin, as prescribed by the doctor. 3. If high fasting blood glucose is caused by infection or other factors, the blood glucose level can be normalized after controlling the infection. If you have high fasting blood glucose, it is recommended that you consult a doctor in time to avoid delaying your condition.