Seaweed has unique flavor and nutritional value. Because seaweed is rich in a variety of life active substances, such as polysaccharides, high unsaturated fatty acids, taurine, carotenoids, steroid and kelp, etc., whether it is used as daily food or extracted active substances as medicine, seaweed is of great benefit to human beings. Seaweed can serve as food reducing weight, because its quantity of heat is low, and contain a lot of cellulose, there is fullness feeling namely after edible a few; Nori can also be used as a food to satisfy hunger, because it contains no sugar; As a health food, seaweed also has excellent health effect. Seaweed is contained in a variety of trace elements, such as iron, zinc, selenium, calcium, etc., these elements are closely related to and physiological activities of human beings, in which iron is an essential part of human hematopoietic function, zinc helps children's intelligence development, calcium can make the person's bones strong, and in recent years, studies have shown that selenium can prevent cancer, enhance the immune function of human body. Therefore, whether the elderly, or young people, eating seaweed can strengthen the body