The sensible heat fluxes measured by Large Aperture Scintillometer（LAS） and Eddy Covariance system(EC) were compared. The data were collected at the Taklimakan desert atmospheric and environment OBSERVATION station located in the middle Taklimakan desert during the period of from June 20 to July 3,2009, which was supported by the Taklimakan deset Land-Atmospheric Interactive Experiment (TLAIE) project.  The results show  a similar variance trends and good agreement between sensible heat fluxes by LAS(H_LAS) and EC(H_EC), but  H_LAS tends to be slightly higher than HEC. The probability distribution function of  HLASand HEC can be as high as 79% if the permitted difference  is in the range of -50~50 W/m². Therefore, we  have reached the conclusion  that the large aperture scintillometer is a reliable system for measuring sensible heat flux of large quicksand area as the Taklimakan desert.