Abstract: With the continuous development of the large-scale and centralized cattle industry in my country,the large amount of manure produced in the process of dairy cow breeding pollutes the environment,causing serious environmental problems. In recent years,the Ministry of Agriculture has issued policies such asthe Action Plan for the Utilization of Livestock and Poultry Manure Resources（2017—2020）,which aims to strengthen the utilization of manure resources and reduce environmental pollution. Therefore,the harmless treatment of manure in large-scale dairy farms is particularly important.the effects of harmless treatment and resource utilization of the manure produced in the dairy farming process by the farms in various regions are not good.This article aims to summarize the hazards of improper treatment of dairy cow manure in the large-scale breeding process and the current situation,and propose a detailed manure treatment plan,in order to promote the healthy development of my country's dairy farming industry.

Key words: dairy cows, manure, hazard, current situation, pollution-free treatment