Density experiment for the maize variety ‘Zhengdan 958’ was conducted in Xiangshan vil-lage of Jilin province in 2005.Relationship of density and yield,density and qualitative character and ef-fect of density to growth and development of maize were analyzed.The optimum density of ‘Zhengdan 958’ in the middle of Jilin province,yield and qualitative character and physiological index under the optimum planting density was made clear.