Abstract: [Objective and Method]Best amount of densities and fertilizer can build excellent group structure and is the bases of group building under fine light effect, so this paper studies the yield and sugar content of stem in New Sweet Sorghum 3 after carrying out different densities and amount of fertilizer base on two factors and five level trial by using the group.The main purpose of this article was designed to study the effects of various amount of fertilizer and planting densities on the yield and sugar content of New Sweet Sorghum 3.[Result]The results showed that the plant fresh biomass,the yield of stem,grain,stem sugar content of New Sweet Sorghum 3 have varied significantly under the treatments of different densities and fertilizer in Ili area of north Xinjiang.All the fresh biomass yield,stem yield and sugar yield were lower from D1 to D5 under high planting density ; however,there were no significant difference under fertilizations; there were significant difference in seed yield under planting density and fertilization; also there were no difference in sugar content under planting density and fertilization. [Conclusion]It was suggested that the planting density of 166 650 plants per hectare and fertilization 450kg per hectare was appropriate for New Sweet Sorghum 3.