Abstract: With the development and expansion of my country's dairy industry,the number of large-scale dairy farms continues to increase,but the problem of manure pollution in dairy farms has become increasingly prominent. Based on my own work experience,the author first analyzes the hazards of manure from large-scale dairy farms,and then summarizes the manure treatment methods of large-scale dairy farms from rain and sewage separation,solid-liquid separation,and dry cleaning processes, and finally from anaerobic（Anaerobic） fermentation to obtain biogas,microbial fermentation for feed and production of bio-organic fertilizer three different models introduce the recycling operation of manure from modeled dairy farms,in order to provide a reference for the efficient use of manure from large-scale dairy farms.

Key words: large-scale dairy farms, manure hazards, manure treatment, recycling