Women who drink black coffee in moderation for a long time can replenish water, minerals and other nutrients as well as water, but long-term overdrinking is easy to affect the health of the body. Black coffee is mainly made from coffee beans, black coffee is a beverage rich in nutritional value, per 100g of black coffee contains 17.1g of protein, 68.9g of carbohydrates, 0.204g of phosphorus, potassium 2.013g, women who drink black coffee in the long term in moderation to provide nutrients for the body, to maintain the body’s normal physiological functions. Black coffee also contains caffeine, women drink in moderation to help relieve fatigue, if long-term excessive drinking, easy to make the brain in a state of long-term excitement, and even cause insomnia. In addition, people who are allergic to black coffee should be prohibited from drinking black coffee, so as not to induce diarrhea, rashes, itchy skin allergic reactions. Gastritis, gastric ulcer and other patients need to limit the intake of black coffee, avoid drinking espresso and so on.