Spirulina is an extremely precious immune enhancer endowed by nature. Spirulina is rich in immune active substances, which can repair and promote the body's immune system. Spirulina is especially suitable for those with weak immunity and health crisis. Why does spirulina have the above immune activity? In addition to spirulina, which is rich in nutrients with strong immune function, such as protein / vitamin B6, vitamin B12, vitamin E, and trace elements iron and zinc, those algae with direct biological activity Polysaccharides, phycocyanin, β-carotene, etc., play an important role in coordination, so that the body's immune defense system is always maintained in a stable and good operating state. Phycocyanin is a dark blue powder isolated from spirulina, with beautiful colors. The blue powder has a special clear fragrance and is easily soluble in water. It is not only a protein, but also an excellent natural food pigment. As a preventive health food, spirulina has been widely used for disease prevention and control . Due to its good results, Spirulina was once in short supply in the market.