Oil soluble chlorophyll is a kind of natural green pigment, which is extracted and refined from natural green plants or silkworm feces. It is a stable chlorophyll, dark green to dark green viscous, insoluble in water, soluble in ether, phenylethane, and other organic solvents. It is usually used in daily chemical products, pharmaceutical chemicals, food industry, etc., as a colorant, deodorant, etc. As a daily chemical raw material, it is widely used as the colorant and deodorant of various green medicated toothpastes and cosmetics. At the same time, chlorophyll can effectively remove the putrid smell, and has obvious effects on periodontitis, oral ulcer, and halitosis. Chlorophyll plays an important role in cancer prevention. It can also protect the liver and promote the healing of gastric and intestinal ulcers. It can be used as pharmaceutical raw materials. At the same time, it has stable coloration and is used as pharmaceutical excipient colorants. As an edible colorant, it is widely used in cakes, beverages, candy, ice cream and other foods