The specific reasons why patients are thirsty after drinking are as follows: 1. osmotic diuresis: because of the stimulating effect of alcohol and osmotic diuretic effect, after drinking, alcohol will stimulate the kidneys after entering the body, accelerating the drainage process of the kidneys and reducing the water in the body. 2. paralysis of nerves: after drinking alcohol dissolves in the liver, mainly by the liver to detoxify, alcohol can paralyze the nerves and make the brain feedback to produce the feeling of thirst. 3. 3. osmotic dehydration: after alcohol dissolves in the blood, it can lead to osmotic dehydration, which makes the brain center feel thirsty. After drinking alcohol, drink more water, especially plain water, and at the same time, you can add some salt and sugar drinks, that is, functional drinks.