Glycerol monostearate is a polyol type non-ionic surfactant. Because its structure has one lipophilic long-chain alkyl group and two hydrophilic hydroxyl groups, it has good surface activity. It can emulsify, foam, disperse, defoamer and resist starch aging. It is the most widely used emulsifier in food and cosmetics. In addition, it also has important applications in the pharmaceutical industry, such as polyunsaturated fatty acid glycerides, which can prevent cardiovascular diseases. Glycerol monostearate is also widely used in the field of polymer synthesis.