NUE（nitrogen use efficiency） of the main released high yield hybrid rice combinations were tested on the field. The results indicat that Xieyou 52 and Y liangyou 2 showed higher yield and NUE than other hybrid rice combinations, under low and medium nitrogen condition. Compared with the control, the yield of Xieyou 52 and Y liangyou 2 increased by more than 5%; NUE of Xieyou 52 increased by more than 10% and Y liangyou 2 increased by more than 5%. The yield and effective panicles of high yield hybrid rice are greatly influenced by nitrogen.Under low nitrogen condition, the hybrid combinations of fewer effective panicles, lower nitrogen accumulation and higher grain weight per plant shows higher nitrogen use efficiency .