Abstract: Guided by the theories on energy flowing and materials exchange within Soil-Atmosphere-Plant Continuant(SPAC),retrieval models of key hydrological parameters were established in the Yellow River Basin based on remote sensing technique.The precipitation andevapotranspiration were derivedfrom the meteorological satellite GMS5 and Fengyun-2 meteorological satellite data.A precipitation model is calibrated and tested with the ground observed data;meanwhile,the evapotranspiration result is verified with the lame aperture scintillometry.