Objective The Vitamin E(VE) is a necessary liposoluble vitamin for animals,performing an important physiological function in animal body,and exert significant effects on development of many biological characteristics in animals.This review summarized in detail various nutritional function of VE,described briefly the factors influencing VE stability,and according to the author's own experience,put forward how many amount of VE should be given in the laboratory full nutritional value cooperated pelletized feed for rats.