There are two major hazards of drinking beer in diabetes: 1) drinking beer leads to excessive sugar and other energy intake and makes the patient’s blood glucose increase, which is not easy to control; 2) beer and other alcoholic ingredients can slow down the metabolism of insulin in the kidneys, thus slowing down insulin discharge in the kidneys resulting in hypoglycemia in the patient. Therefore, patients should not drink beer and other alcoholic preparations, you can drink red wine in moderation, but only when the blood glucose control is good, and the amount of drinking is also limited, for example, about 20ml a day.