Abstract: The objectives are to discuss the change regulation of leaf SPAD value of super rice‘Songjing 9’ and‘Songjing 15’, and determine the relationship between leaf SPAD value and yield traits. Using the two super rice varieties as materials, by a field plot comparison test, the changes of SPAD value of the 4 top leaves at jointing stage, heading stage, filling stage and mature stage were studied under different fertility conditions. The results showed that, with the increase of fertilizer amount, the leaf SPAD value of the 2 super rice varieties showed a gradual increasing trend, and the higher the fertilizer amount, the smaller the increase was. Throughout the whole investigation period, SPAD value of the‘Songjing 15’was significantly higher than that of‘Songjing 9’. The leaf SPAD values of the 2 super rice varieties were positively correlated with the number of spikes per hole, grain number per panicle and yield per hectare, negatively correlated with seed setting rate and 1000-grain weight. The correlation between SPAD value and grain number per panicle and seed setting rate was closer, and the correlation reached a significant or extremely significant level.