Abstract: Silage maize has tall plants, high yield, lush stems and leaves and rich nutrition. It is a high-quality feed for beef cattle and dairy cows. After the harvest of rape, winter wheat and other crops, replanting one season of silage maize can not only improve the land utilization rate, but also increase the yield per unit area. In recent years, the planting area of silage maize in Henan Province is also expanding. Better development benefits can be obtained by effectively popularizing the extremely mechanized harvesting technology of silage maize.