Choline Chloride belongs to vitamin B family, is an indispensible substance of fatty metabolism in animals and a component of lecithin and phospholipid. It can enhance the synthesis of amino acid and increase the utilization ratio of amino acid in animals, improve the animals' and fowls' disease resistance. It also can promote the developmental and reproductive capacities of animals' and the fowls' laying ratio, accelerate the animals and fowls for meat to mature in advance. At the same time, it can decrease the feed consumption, increase the feed reward and so be an excellent feed additive.