Baicalin is a kind of flavonoid extracted from the root of Scutellaria baicalensis. It has remarkable biological activity, has antibacterial, diuretic, anti-inflammatory, anti-metamorphic and antispasmodic effects, and has strong anticancer reaction. And other physiological effects. Has occupied an important position in clinical medicine. Baicalin can also absorb ultraviolet rays, scavenge oxygen free radicals, and inhibit the formation of melanin. Therefore, it can be used in medicine or cosmetics. It is a good functional cosmetic raw material.