Betaine hydrochloride is an efficient methyl donor, which can partially replace methionine and choline chloride and reduce feed costs. The methyl supply efficiency of betaine hydrochloride is 1.8 times that of 50% choline chloride and 2.6 times that of methionine. The compatibility of anticoccidial drugs with Chemicalbook betaine hydrochloride can buffer the changes in ion balance, thereby Improve nutrient absorption rate and promote poultry growth. In premix and concentrate, betaine hydrochloride has a protective effect on the stability of VA and VB, and improves the use effect.