The effect of drinking liquor on blood sugar is to be said separately from two aspects. Blood sugar will not rise at the time of drinking liquor, but drinking liquor will indirectly bring about fluctuations in blood sugar levels, as follows: First, because liquor inhibits hepatic glycogen isogenesis and glycogenolysis, blood sugar will not rise at the time of drinking liquor, but may fall, or even appear to be significantly hypoglycemic. Therefore, it is not recommended to drink liquor when you are suffering from diabetes, which may bring about serious hypoglycemia, masking the symptoms of hypoglycemia and causing danger. Second, when drinking liquor, the duration of meals will be prolonged and the intake will be increased, and this is when blood sugar will fluctuate. At the same time, liquor contains certain calories, which will also have an effect on blood sugar. The effect of liquor on blood sugar will cause a short-term drop in blood sugar, while the long-term effect will be a rise in blood sugar, which will cause serious fluctuations in blood sugar and affect the control of diabetes, and it is not recommended to drink liquor when you have diabetes.