1. calcium propionate as fodder additives can effectively restrain the feed mildewy, extend shelf life, if feed with other inorganic salt with which can improve the beast's appetite, improving cow's milk production. Calcium propionate volatile small animals, high temperature resistance, good adaptability, suitable for variety of feed use. 2. In addition, calcium propionate can also be used as an additive toothpaste, cosmetics, have good anticorrosive effect