Diabetic patients can drink alcohol, but should not drink to excess. Because excessive drinking is harmful to health, first of all, alcohol will inhibit hepatic glucose isogenesis, so some people will have panic, sweating, and even coma after drinking a lot of alcohol without eating staple foods, which is actually mostly a reaction to hypoglycemia, which may increase the occurrence of cardiovascular and cerebrovascular events, and may be life-threatening in serious cases. At the same time, because alcohol is mostly brewed by grain energy is not low, and drinking alcohol will increase the time and amount of food, a variety of food intake after the increase in energy, there will also be an increase in blood sugar. So drinking alcohol can cause large fluctuations in blood sugar. Secondly, alcohol can stimulate the gastric mucosa, a large amount of alcohol can easily damage the gastric mucosa causing peptic ulcers, in addition there are some studies that show that drinking alcohol can cause hypoglycemia and hypoglycemic drugs are especially effective. Of course, drinking alcohol is not absolutely harmful, because a small amount of wine is to activate blood circulation, improve microcirculation, and women drink a small amount of red wine daily and the role of beauty. So it is recommended that diabetic patients can drink a small amount of alcohol, but not a lot of alcohol. And be sure to eat the main meal after drinking alcohol and do a good job of monitoring blood sugar.