Spirulina is an ancient blue-green microalga, so named for its slender spiral structure. It is recognized as one of the most nutritionally rich foods on Earth, abundant in high-quality plant protein, a variety of vitamins, minerals, essential amino acids, and the unique phycocyanin. Its protein content is as high as 60%-70%, with excellent digestibility and absorb ability. It is often processed into powder or tablets as a dietary supplement, and has various health benefits such as enhancing immunity, resisting oxidation, regulating blood lipids, and relieving fatigue. It is an ideal nutritional source for vegetarians and people who focus on health.