Drinking alcohol has a certain effect on blood sugar, and how big the specific effect is needs to be combined with personal health and diet. Alcohol can have an effect on blood sugar by affecting insulin secretion, damaging the liver and reducing the efficacy of drugs, etc. Alcohol should be avoided as much as possible to avoid adverse effects on the body. 1. lower blood sugar: in the process of drinking, ethanol can stimulate insulin secretion, and at the same time can inhibit the isogenesis of liver glycogen in the liver, and if one drinks on an empty stomach, hypoglycemia is likely to occur; 2. raise blood sugar: if one eats in the process of drinking had something to eat, especially high carbohydrates or drink is beer, because alcohol will affect liver function, which affects sugar metabolism, so that blood sugar briefly increased. If you drink alcohol for a long time, alcohol will also increase insulin resistance and make the hypoglycemic effect of insulin weaker, which will also raise blood sugar and aggravate the development of type II diabetes. In the case of long-term heavy drinking, it has a great impact on liver function and may lead to fatty liver or alcoholic cirrhosis, which in turn affects sugar metabolism and raises blood sugar. Eating more food than usual in the process of drinking alcohol can also lead to elevated blood sugar. So drinking alcohol has both the risk of lowering blood sugar and the risk of raising it. In daily life, try not to drink alcohol, and if you must drink alcohol because of work and social functions, pay attention to the right amount, and do not drink on an empty stomach. Patients with abnormal blood sugar should be more cautious in drinking alcohol and try not to drink, and closely observe blood sugar after drinking.