Abstract: As an unconventional feed resource,halophytes have the advantages of salt tolerance,stress resistance,wide distribution,which can efficiently use marginal land and reduce dependence on traditional feed.However,the high salt growth environment has a significant impact on the composition of nutrients,minerals and metabolites,which in turn affects the feeding value of livestock.This paper systematically summarized the main species,nutrient,mineral and secondary metabolite components of forage halophytes,the effects of salt stress on nutrient composition,and the feed utilization of halophyte resources at home and abroad.At the same time,the effects of feeding halophytes on the mineral metabolism and health of livestock and the main utilization methods were discussed,and the future research directions of halophyte feeding and safety evaluation,functional active substances mining,antinutrient elimination utilization technology and forage variety selection were pointed out,which provided a new way to solve the shortage of forage resources,the sustainable development of animal husbandry and the restoration of saline soil.

Key words: Halophytes, Forage, Nutritive Value, Livestock