Bidirectional Reflectance Distribution Function (BRDF) describes the anisotropic distribution of surface reflectance. Bidirectional Reflectance Factor (BRF) is an alternative parameter to BRDF and is measurable while BRDF is only a theoretical concept. Land surface albedo plays a crucial role in climate and biosphere modeling. Paddy rice is a special crop type which grows in the water flooded environment. Reflectance of paddy rice field is coupled by rice plants and water flooded soil background. Refraction and absorption coefficients of water differ from soil and green vegetation [1]. Anisotropic properties of paddy rice and effects from background water which covers the rice field in most of growing season must be considered and evaluated. BRF and albedo properties of agricultural regions in climate model were derived mainly from upland crops and paddy rice field features have not been considered adequately. In this study, we aim to examine the comprehensive seasonal characteristics of paddy rice and explore the reflectivity relationships between background water and the whole canopy.