The method of plot experiment with field application was used in this research. The variations of rice foliage and canopy spectra with corresponding biochemical concentration field-measured in jointing

heading and filling stages were analyzed. Through the analysis of absorption characteristic and vegetation index

the best spectral features for rice nitrogen and chlorophyll concentration estimation were obtained. Based on the Hyperion image of Jiangyan

we built the models of rice canopy nitrogen and chlorophyll estimation. At last

rice canopy nitrogen and chlorophyll concentration were retrieved from Hyperion image and their distribution maps were obtained. The results showed that:（1） Nitrogen concentration can be retrieved accurately using the area of absorption feature centered at 670nm based on band depth normalized to band depth （BNC） analysis; （2） Based on reversional normalized spectrum

NDVI using 560nm and 670nm was strongly correlated with chlorophyll concentration.