Contain the human body needs many kinds of nutrients, especially containing iodine, you lack in people's diet is a kind of important nutrition food. Its nutrient composition is characterized by very low fat content, protein and inorganic salt content is rich, is a kind of high protein, low fat, low quantity of heat of nutritious food. Contain protein, fat, sugar, ash, calcium, phosphorus, iron. In addition also contains iodine, tobacco and acid, vitamin A and B.