Wine plays an important part in people’s lives, and some people believe that drinking small amounts of wine is good for the body. The Book of Han. Food and Trade” has said: “wine, the beauty of heaven, the emperor so nourish the world, enjoy the sacrifice to pray for good fortune, to support the decline of disease”. The wine is considered to be a heavenly delicacy, and the wine is linked to the enjoyment and health of the emperor. But it is a consensus that excessive drinking can cause great damage to the human liver. So, how much alcohol consumption will not damage the liver, and will even play a health role? Modern medicine believes that ethanol intake of ≥ 40 grams/day for men and ≥ 20 grams/day for women for 5 years will result in chronic alcoholic liver disease, which shows that women are less tolerant of alcohol than men. The conversion formula for the amount of ethanol is: grams = amount of alcohol consumed (ml) x degree of alcohol (%) x 0.8. For example, if you drink 2 taels (100 ml) of 56 degree white wine per day, the amount of ethanol is over the limit (100 ml x 56% x 0.8 = 44.8 grams). If it is a woman the amount of alcohol has exceeded more than 1 times. The alcohol content of red wine is generally 10-15 degrees. Calculated at 12 degrees, three taels (150 ml) per day is not considered over the limit (150 ml × 12% × 0.8 = 14.4 grams). So it is recommended that you drink a small amount of red wine. Some people believe that drinking red wine has certain health effects, but of course there is still controversy. The elderly due to degenerative changes in various organs of the body, the liver detoxification function is also poorer than young people, the amount of alcohol consumption should be under the above standards, of course, if suffering from hypertension, coronary heart disease and other important organ diseases of the elderly or not to drink alcohol is better.