Using high resolution remote sensing and in-situ data, regional evapotranspiration (ET) retrieved based on different system Tibetan atmosphere, Tibetan lake, glacier (snow mountain),Tibetan plant and Tibetan wetlands during different seasons over the central Tibetan Plateau.The aim is to achieve observation points to the regional scale conversion. From the field observation data coming from the different landscape with Tibetan atmosphere, Tibetan lake, glacier (snow mountain),Tibetan plant and Tibetan wetlands, the basic ET parameters were calculated. The use of satellite remote sensing improved parameterization schemes calculated on the regional high-resolution land heat flux, and then get the regional ET. Using typical landscape of the central Tibetan Plateau region atmospheric boundary layer observations and the parameterization scheme, we will get the regional high resolution ET. All of this is to get an elaborate and general concept of surface hydraulic process and water resource status.