Abstract:Corn straw silage is low in price, rich in sources, mellow and juicy, comprehensive in nutrition, good in palatability, has high digestibility and utilization rate, and can achieve balanced supply all year round. This is the main forage for beef (dairy) cattle. However, the moldy and spoiled silage (grass) of farmers poses a certain threat to the cattle industry and the safety of meat (milk) products. This has become a bottleneck problem for farmers to develop corn whole plants and straw silage for both grain and feed. Overcoming the problem of mildew and corruption of silage (grass) should arouse the great attention of practitioners.