Natto is a common food and does not have therapeutic effects. However, natto is rich in protein, carbohydrates and other nutrients, which can effectively replenish the nutrients needed by the human body, so natto also has a certain nutritional value. Natto is rich in proteins and carbohydrates, which can provide the body with energy and a variety of amino acids needed by the human body. In addition, natto also contains crude fiber, saponin, vitamins and potassium, calcium, iron and other trace elements, can effectively supplement the body’s daily nutrients, to maintain the normal functioning of the body. Note: Because of the high purine content in natto, gout, gastrointestinal discomfort patients should not eat, so as not to aggravate the condition. In addition, patients with kidney disease should not eat natto, so as not to aggravate the metabolic burden of the kidneys.