Abstract: Green forage has high biomass, rich nutrition and good palatability which is considered as a good feed resource for herbivores. With the development of large-scale herbivores breeding industry, the green forage is increasingly demanded. Ensiling is a processing and modulation method for the long-term storage of green forage. This cost saving method is easy to operate and is able to control the nutrient losses of green forage at the greatest extent. The production of silage can be served as an effectively complementary approach to the meet demand of green forage for herbivores. The processing and preparation technique of silage as well as the facility establishment for silage production are introduced, and the silage quality evaluation and application methods are expounded, in hoping to provide references for the scientific preparation and application of silage.