The common reasons for high fasting blood glucose in the morning include the effect of diet the night before, dawn phenomenon, and unreasonable glucose-lowering program. The main solutions are reasonable lifestyle, correct medication, etc. The specific solutions should be decided after the causes are clarified under the guidance of the doctor. 1. Influence of the previous night’s diet: Consuming food with too many calories the previous night or eating late-night snacks in the early hours of the morning will easily lead to indigestion of food, which will result in the phenomenon of high blood sugar in the morning. The solution is to go to bed early, avoid staying up late and eat healthy. 2. Dawn phenomenon: Due to the increase of growth hormone, glucocorticoid and other insulin antagonist secretion in the morning, it will lead to the increase of blood glucose. This is a normal physiological phenomenon in normal people and can be handled without special treatment. If you are a diabetic, you need to take glucose-lowering drugs or insulin in advance, and you can use medication under the guidance of your doctor. 3. Unreasonable glucose-lowering program: the solution is to change the glucose-lowering program under the guidance of the doctor, change other glucose-lowering drugs or increase the dosage of glucose-lowering drugs. High fasting blood glucose in the morning is recommended to improve the relevant examinations, such as postprandial blood glucose, glycated hemoglobin, etc., which will help to clarify the cause of the disease. Drugs should be used under the guidance of a physician, and in daily life you need to pay attention to standardize the diet, eat more vegetables, limit the intake of sugar, moderate physical exercise.