Using the observed BJ site data from CEOP Asia-Australia Monson Project on the Tibetan Plateau (CAMP, 2001-2005) from 1 August 2002 to 31 August 2003, the land surface energy flux characteristics in seasonal frozen soil region of central Tibetan Plateau were predicted by the Simultaneous Heat and Water(SHAW) model. The model closely captures the pattern of the surface energy flux, including net short wave radiation, net long wave radiation, net radiation, soil heat flux, sensible heat flux, and latent heat flux. Net short wave radiation and net long wave radiation were predicted well. The simulated results of net radiation and soil heat flux during summer half year were also well, but that of them during winter half year is litter larger than the observed. The simulated sensible heat and latent heat flux have a reasonable seasonal change. Furthermore, the Bowen ratio calculated by predicted sensible heat and latent heat can indicate energy conversion of solar radiation during different seasons.