Abstract: Evapotranspiration plays a significant role in the earth's water and energy balance system. It affects regional and global climate, ecological environment and agricultural yield through the hydrological cycle. Remote sensing technique, which can provide representative regional surface parameters, has proven to be the only suitable approach to the estimation of large-area ET. This article summarizes and evaluates widely used models that were applied for predicting regional ET using satellite remotely sensed data and routine meteorological data, such as SEBAL and VITT. It is evident that quantitative ET retrieval with remotely sensed data at large scale has manifested its great prospect.