Gracilaria is rich in seaweed polysaccharides, iodine, calcium, iron and other essential normal and trace elements and vitamins A, B1, C and so on. Japanese studies have shown that it has the effects of clearing the lungs and defecation, nourishing the face and losing weight, lowering blood pressure and blood lipids, and adjusting body functions. The traditional edible seaweed is the main reason why the average life expectancy of Okinawa people in Japan is the highest in the world. Therefore, Shuiyun has the reputation of longevity dish in Japan. It has a miraculous effect on clearing the lungs and intestinal toxins and eliminating waste in the body. Regular consumption can balance the internal environment and ensure smooth excretion. It is the most ideal pure natural marine health food for women to lose weight and beauty and habitual constipation for middle-aged and elderly people. It has the functions of clearing away heat, detoxification, resolving phlegm and moistening stool. Regular consumption of seaweed can convert toxic organic matter in the human body into non-toxic substances, purify the blood, and prevent cancer.

Economic value of Gracilaria: it is not only the first-class raw material for the extraction of agar in the food industry, but also can be used as high-quality feed for abalone breeding and green health food for human beings. Agar has coagulation and stability, and can be used as thickening agent, coagulant, suspending agent, emulsifier, stabilizer, preservative, adhesive, and biological medium. Agar is widely used in the manufacture of granular beverages, rice wine beverages, fruit juice beverages, crystal fudge, yokan, luncheon meat, ham sausage, jelly pudding, ice cream, decorated cakes, eight-treasure porridge, cold dishes, etc. Agar is used in toothpaste, shampoo, facial cleanser, cosmetics, solid fragrance, etc. in the daily chemical industry. It also has a wide range of uses in medical research.