Using the data from ‘The Badain Jaran Desert Land-Air Interaction Field Experiment’, the characteristics of radiation flux and energy budget component in two different underlying surfaces (i.e., desert and the growing reed′s desert) were analyzed. The results show that the albedo inthe desert is bigger than that inthe growing reed′s desert. The desert albedo is 0.33, whilethealbedointhe growing reed′s desert is 0.23. The energy budget components vary in different underlying surface conditions.During the daytime, the radiation components increase with the increase of solar elevation angle. During the nighttime, the radiation components change fairly small. The net radiation fluxes of different underlying surfaces are closely. In the desert, the sensible heat flux is the biggest, and the surface heat flux is the second, the latent heat flux is fairly small. In the growing reed′s desert, the latent heat is dominant, the sensible heat flux and the surfaceheat flux both have the same smaller magnitude.