Eating black beans every day can provide the body with some energy, replenish some of the required nutrients such as carbohydrates and proteins, and can maintain normal life activities to a certain extent. Black beans have some nutritional value, but pay attention to food diversity and eat in moderation. According to the food composition table, every 100g of black bean energy has 1678KJ, 15.9g of fat, 36g of protein, 33.6g of carbohydrate, 0.2mg of vitamin B1, 1377mg of potassium, 224mg of calcium, 7mg of iron and so on. Diet also needs to pay attention to not recommended to consume too much, if excessive consumption of black beans in a short period of time, may stimulate the gastrointestinal tract, causing abdominal pain, diarrhea and other uncomfortable symptoms. Secondly, the diet also needs to be diversified, daily life also need to choose to eat some fresh vegetables, fruits, meat, etc., in order to ensure that the human body intake of comprehensive nutrition, to avoid a single diet caused by malnutrition.