Sorbitol is widely used in fields of medicine,light industry,food and chemistry.It is mainly used for the materials of Vc in medicine and materials of surfactant in light industry.It also can be used in toothpaste, cigarette and cosmetics as the substitute of glycerin.In the food industry, sorbitol is used as edulcorator, especially suitable for the food of diabetics;It also can lengthen the storage term of some food.In chemical industry,sorbitol rosin ester is used as the materials of common construction coating.