Although the nutrition in fruits is very rich, but far from the level necessary for the human body, the essential nutrients, such as protein, fat, calcium, iron, zinc and other trace elements, the content of these elements in fruits is extremely small, if long-term consumption of fruits for the main meal, will cause the human body protein and iron intake is insufficient, causing anemia, immunity and other adverse phenomena. Too much acidic fruit will destroy the acid-base balance in the body, too much fruit will make the body lack of copper, resulting in a sharp increase in blood cholesterol content, causing coronary heart disease and other uncomfortable symptoms, the sugar in the fruit is very high, eating too much will not only cause the body to gain weight, but also make a sharp increase in blood sugar, so it is recommended to maintain a light diet, plus appropriate exercise, fruit can be eaten but in moderation, usually appropriate supplementation of water and vitamins.