Alcohol is not recommended for high blood sugar. Diabetic patients should control the total calorie intake in their diet and maintain a low-salt, low-sugar and low-fat diet, while alcohol, including white wine, beer, etc., no matter which kind of alcohol contains a large number of calories, and diabetic patients drinking alcohol may lead to large fluctuations in blood glucose, which is not conducive to the control of blood glucose. Moreover, drinking a lot of alcohol on an empty stomach may cause hypoglycemic episodes, with symptoms such as fatigue, cold sweats, and hunger pangs, while the symptoms of drunkenness may mask the symptoms of hypoglycemic episodes, which may threaten the patient’s life if he/she fails to replenish sugar-containing food or glucose in a timely manner. Patients diagnosed with hyperglycemia should maintain a healthy diet, abstain from smoking and alcohol, and cooperate with their doctors for active treatment.