In the process of milk production,the gastrointestinal tract of dairy cows serves as the primary source of methane emissions.Therefore,this paper provides a comprehensive overview the effects of various nutritional regulation measures,including dietary NFC,starch,protein,fiber,fat and feed additives;management measures such as DMI,health and herd structure;and genetic selection measures such as milk yield,feed conversion efficiency and rumination behavior on mitigating methane emissions of dairy cows.