New types of forage maize included annual and perennial forage maize,which were bred by distant hybridization between maize and teosintes(Zea mexicana and Zea perennis,respectively).Analyzing the biology yield of SC1 and SC3 indicated that the fresh matter yield per year was 115 620kg/hm~2 and 174 045kg/hm~2,respectively.The yield was four to six times than 48-2(Zea mays).Analyzing nutrient composition showed that SC3 had the highest crude protein content(CP) 17.57%,nitrogen-free extract content(NFE) 48.73% and the lowest crude fiber content(CF) 21.65%.Ether extract(EE) and crud ashe(CA) of SC3 was 4.30% and 7.75%.The nutrient compositions of SC1 were 14.73%(CP),26.09%(CF),45.29%(NFE),4.78%(EE) and 9.11%(CA).And SC1 and SC3 was NC and N type respectively by analyzing chemical nutrition type.These results indicated that SC1 and SC3 are high yield and high quality forage maize.