Abstract: Mastitis is one of the most frequently observed diseases in dairy cow farms. This disease has a high incidence in cattle herds and always brings huge economic losses to dairy cow breeding industry. The localized inflammation caused by the invasion of pathogenic microorganisms into mammary gland tissues always results in dairy cow mastitis, which not only reduces the milk production but also affect the quality of milk. There is vital clinical significance for prevention and control of this disease due to the clinical therapy associated veterinary drug residues and unsatisfied curative rate caused by infection of certain species of pathogenic microorganisms. The research progress on dairy cow mastitis was reviewed from the aspects of pathogenic bacteria species, pathogenic mechanism, diagnostic methods and control measures, in hoping to provide references for the scientific prevention and control of this disease.

Key words: dairy cow mastitis, pathogenic microorganisms, pathogenesis, preventive measures