Field experiment has been conducted to illuminate regulating effects of irrigation and nitrogen on paste traits of starch of two spike-type wheat cultivars.The results indicated that the correlation coefficients were highest between PV and other parameters,especially the correlation coefficients were more than 0.93 between PV and TV,FV,which showed that PV was a important index in weighing paste traits of starch.By comparison of two cultivars,BD of Yumai 49 was lower than that of Yumai66,the other parameters of Yumai49 were higher,which suggested that paste traits of starch of Yumai 49 was better.Strategy of irrigation and nitrogen had a strong effect on paste properties of starch of two spike-type wheat cultivars,and variation coefficients of Yumai 49 were higher,which was good to regulate to improve starch quality.In general,treatment with 300 kg/hm~2 N was better,irrigation treatment with one application was proper in management of water and nitrogen for Yumai66,but treatment with 150 kg/hm~2 N was best,irrigation treatment with two applications was effective for Yumai 49.Experiment also suggested that there was interaction between irrigation and nitrogen,paste traits of starch can be improved by applied nitrogen according to irrigation,the difference was significant between two spike-type wheat cultivars.