Abstract: The correlations of agronomy components and red edge parameters were discussed.The results indicate that the FD-Max can be used for predition of leaf area index,and Depth672 for the stem total nitrogen content,Lwidth for the leaf total nitrogen content,water content and soluble sugar of leaf and stem.The regression models with the red edge parameters as independent variables were established.The analysis on the forecasting function of the models shows that red edge parameters can be used as sensitive indicators of summer maize growth and nutrition status.