Abstract: Dairy cow fatty liver is an important and common mass disease in the process of cow feeding， which is mainly related to the metabolic balance of energy. Because of its incidence generally accompanied by body conditions, reproductive capacity and decline in milk production, large-scale dairy cattle feeding early on the diagnosis and detection of fatty liver dairy is a cost-saving necessary. This paper summarizes the causes of fatty liver from dairy cows, methods of diagnose and monitor, and the internal relationship between fatty liver in dairy cows, inorder to make a more theoretical basis for the study of fatty liver.

Key words: dairy cow, fatty liver, diagnosis