1. Spirulina (scientific name: Spirulina), belonging to Cyanophyta, Cyanophyta, Characteridaceae and Spirulina, is an ancient lower prokaryotic single cell or multicellular aquatic plant, with a body length of 200-500 μ m and a width of 5-10 μ m.
 2. It is shaped like a clockwork and spirally blue-green, so it is also called blue-green algae.
 3. Originated in Mexico and the alkaline lakes in the tropical area of Chad in central Africa, it has long been eaten by local residents.
 4. Spirulina is suitable for high temperature and alkaline environment.
 5. More than 35 species have been found, which grow in both fresh and brackish water. However, only 2 species of spirulina platensis and giant spirulina are used for production in the world.
 6. Spirulina is one of the microalgae produced on a large scale, a rare algal organism with a life history of 3.5 billion years, and also a natural food.
 7. Spirulina is the most abundant and comprehensive organism in nature. Spirulina is rich in high-quality protein, γ - linolenic acid fatty acid, carotenoids, vitamins, and a variety of trace elements such as iron, iodine, selenium, zinc, etc.