Abstract: With the development of modern cattle breeding,the breeding density of dairy cows has increased greatly, but the resistance to pathogenic bacteria and diseases has been declining.Cow endometritis is a common reproductive system disease in dairy cows.The pathogen comes from a variety of pathogenic bacteria,which mainly threaten estrus, breeding and conception of cows.This article analyzes the etiology and clinical symptoms of dairy cow endometritis, and points out the diagnosis methods and prevention measures.With a view to alleviating the threat of dairy cow endometritis to dairy cows and farmers,and to provide a theoretical basis for ensuring the health of the reproductive system of dairy cows.

Key words: dairy cows, endometritis, diagnosis, prevention and treatment