1. Coffee contains a certain nutritional component. Nicotine acid in coffee contains vitamin B, and the content of coffee beans after baking is higher. And there are free fatty acids, caffeine, tannic acid, etc. 2. Coffee is beneficial to the skin. Coffee can promote metabolic function, and activate digestive organ, has a great effect on constipation. The use of coffee powder bathing is a warm therapy, has the role of weight loss. Drinking a cup of coffee after meals also helps digestion. 3. Coffee has hangover function. Drink coffee, which will be converted from alcohol to the rapid oxidation of acetaldehyde, decomposition into water and carbon dioxide emissions from the body. 4. Coffee can eliminate fatigue. To eliminate fatigue, you must supplement nutrition, rest and sleep, and promote metabolism, while coffee has these functions. 5. A day of three cups of coffee can prevent gallstones. For caffeine-containing coffee, which stimulates the contraction of the gallbladder and reduces the cholesterol prone to gallstone formation in bile, the latest Harvard researchers found that men who drank two or three cups of coffee a day were less likely to be gallstones than 40%. 6. Drinking coffee often prevents radiation injuries. Radiation injuries, especially electrical appliances, have become a more prominent pollution at present. The Indian BA-Pakistani atomic researchers obtained this conclusion in mice experiments and indicated that they could be applied to humans.