Abstract: To explore the effect of nitrogen application on yield and nitrogen use efficiency of super early rice, super early rice ‘Xinfengyou22’ and ‘Jinyou458’ was used as a test materials, designed 6 level of nitrogen, the effects of different nitrogen application on super double season early rice yield and nitrogen using efficiency were studied. The results showed that, the yield of the nitrogen treatment was significantly higher than N0, ‘Xinfengyou22’ N4 than N0 120.86%, ‘Jinyou458’ N4 than N0 145.34%, in 0-195 kg/hm2 range, the grain yield with nitrogen increased, when nitrogen application up to 195 kg/hm2 yield was the supreme, and then is decreased. In the low nitrogen level, increase nitrogen application was beneficial to improve rice effective panicles per unit area, grain and straw nitrogen uptake. Nitrogen content of the grain in the mature period with the increased amount of nitrogen significantly increased trend. Nitrogen agronomic efficiency and nitrogen partial productivity was decreased with the increased amount of nitrogen, nitrogen agronomic efficiency of ‘Jinyou458’ was N1>N2>N3>N4>N5, ‘Xinfengyou22’ was N1 > N4 > N2 > N3 > N5.