The purpose of this study was to discuss the effect on yield and fruit quality of grape by coupling of alternate irrigation method and nitrogen reduction. 4 years old Liaofeng grape(Vitis vinifera ‘Liaofeng’)trees were taken as experimental material.The experiment was conducted with two irrigation methods:alternate partial root-zone drip irrigation(AI) and conventional irrigation(CI),three N applied rates:no N fertilizer applied(NN,0 kg/ ha N),recommended N rate(RN,100 kg/ha N) and farmer practice N rate(FN,200 kg/ha N).New shoots growth,redundant growth,leaf photosynthetic characteristics were observed.The results showed that there was a significant interaction between the irrigation methods and N applied rates.The new shoot length of CIFN treatment was the highest,which was 11.9% and 6.8% higher than that of AIRN and AIFN, respectively.At the same irrigation mode,the pruning amount of new shoots of two N applied treatments was higher than NN treatment(P<0.01).The total pruning amount of AI(average of all N treatments) was significantly decreased by 21.1% compared to CI.Pn of AI increased compared to CI,Tr of AI was significantly lower than CI.iWUE of AI increased significantly.And iWUE of AI coupling with RN was highest,which increased by 17.6% and 34.0% compared to CIRN and CIFN.The yield,soluble sugar and Vc contents increased of AI.And sugar-acid ratio of AI coupling with RN was significantly increased.In conclusion,the synergistic effect of alternate root-zone irrigation and recommended nitrogen rate reduced the redundant growth of grape,created good photosynthetic characters, and promoted grape yield and quality.