In this paper,different levels of nitrogen fertilizer were applied in Qiuyan varieties(Punica granatum L.)to study their effect on fruit yield and quality.The results indicated that the contents of soluble solids,vitamin C and sugar were increased when proper quantity of nitrogen fertilizer was applied.The yield was increased significantly when nitrogen fertilizer was applied,but the content of acid were decreased.The ratio of sugar to acid were increased.Nitrogen fertilizer application had no effect on the seed weight and seed hardness.The nitrogen content of pomegranate seeds was higher than that of pomegranate peel,and the nitrogen content in pomegranate juice was very low.The content of nitrogen in pomegranate juice was significantly decreased in middle and high nitrogen treatment,and the change of nitrogen content of pomegranate peel and pomegranate seed was not significant.In this experiment,the optimal nitrogen fertilizer application amount for the 5yearold pomegranate trees was 0.4 kg·plant-1.