Abstract: Based on the radiation energy observation data of natural sandy land and artificial green space in Taklimakan Desert in 2013,the differences of energy budget of different underlying surfaces were analyzed.The results show that:（1） The diurnal variation of radiation components is significant,and the maximum diurnal difference of Surface Upward Longwave Radiation（ULR）is 50 W·m^-2.（2）Soil moisture is one of the main controlling factors causing the difference of surface albedo.Drip irrigation is the main way of water supply for artificial green space in desert,which promotes the improvement of soil moisture content in desert,thus affecting the change of surface albedo.（3） Net radiation（R_n）has different energy dissipation forms in daytime and at night.Sensible heat flux（H）dominates in daytime,while surface soil heat flux（G₀）dominates in night.During the vegetation growth cycle,the latent heat flux（L_E）energy consumption increased by 1.5%.（4）The fluctuation range of land surface energy balance ratio（EBR） in green land was larger than that in sandy land,and the EBR of sandy land increased faster than that of green land.The closure rate of green land was the highest in summer,while that of sandy land was the highest in spring and summer.