Applications: 1, It's mainly used as a dietary supplement. 2, Applied in fodder nutrient supplements, threonine is a kind of essential amino acid. Threonine is usually added in the fodder for piglet and poultry. It is the second limiting amino acid in swine feed and the third limiting amino in poultry feed. It's added in the fodder with base of wheat, barley and other cereal. 3, Used as nutritional supplement, and also be supplied in preparation of amino acid transfusion and comprehensive amino acid agent. 4, It is applied in adjuvant therapy of peptic ulcer and also applied in curing of anemia, angina, aortitis, cardiac insufficiency and other diseases of cardiovascular system.