Abstract: It have ecological significance to develop herbivorous animal husbandry by changing grain land to forage land. We sdudied it’s meat production and economic benefit. The results showed that the dry matter yield of silage of dedicated silage maize was 37.9 t·hm⁻² in Changchun, the average grain yield of local common grain maize was 12.5 t·hm⁻² and it’s average yield of stvover was 12.8 t·hm⁻². The land for producing silage and feeding cattle produced more energy and digestibility energy, which was 74% higher than the land changed for producing grain and feeding swine. The digestibility energy of maize silage is 33% higher than that of grain and stvover. In the whole growth process of livestock including female animal feeding , the meat yield per unit area was 50% more for feeding swine by the grain than that for feeding cattle by the silage. The balance ratio of silage production to grain production was 6∶1 for their meat production equal. Under current beef and pork prices, planting and harvesting silage to feed cattle and produce beef is 38% more profitable than producing grain maize to feed swine.