Watershed evapotranspiration is an important process of surface water movement. Water and soil conservation measures influence this process by altering properties of the underlying surface. To reveal evaportranspiration characteristics of watersheds different in adoption of water and soil conservation measures, two watersheds, Jiuyuangou and Peijiamao in a hill-gully region of the Loess Plateau, were selected as subjects for estimation of evapotranspiration from different underlying surfaces using the energy-balance based SEBAL remote-sensing model. Results show that the surface albedo of the study area varied mostly in the range of 0.1~0.2; the NDVI of the watershed under different water and soil conservation managements displayed different seasonal variation; the net radiation fluctuated in the range of 400～800W m^-2, the sensible heat flux of 50~200W m^-2, and the soil heat flux of 100~200W m^-2；the daily evaportranspiration of Jiuyuangou, which is better managed in water and soil conservation, is slightly less than that of Peijiamao. Lands different in land use followed the order of check dam > orchard > woodland > grassland > terrace > slope land in daily evaportranspiration. Analysis of rationality of the calculation from various angles suggests that the estimation of watershed evapotranspiration using the SEBAL model is reliable.