Green tea for the human body does not have drug efficacy, only to provide the human body with green tea contained in the tea polyphenols and other nutrients, only the existence of nutritional value. Green tea is a common beverage and does not belong to the category of medicine and food, and does not have any therapeutic effect on the human body. In the absence of allergies, moderate consumption of green tea can only provide the body with the nutrients contained in green tea. Green tea is rich in carbohydrates, protein, dietary fiber, tea polyphenols, vitamin C, etc., per 100g of green tea contains 34.2g protein, 50.3g carbohydrates, 15.6g crude fiber, 19mg vitamin C, 9.57mg vitamin E, 1,661mg of potassium, 196mg magnesium, 325mg of calcium and other nutrients. Moderate consumption of green tea can provide the body with a certain amount of the above nutrients dissolved in water. It is not recommended to drink strong tea, not recommended to drink a lot of tea, and should not drink overnight tea to avoid causing discomfort.