Abstract: This paper comparative analyzes the survey observe data in Tibetan plateau and T639 data in July, 2009, some conclusions are drawn as follows:by comparing wind, humidity and temperature filed of sound observe and T639 data in Lhasa, Naqv and Dingri, we think that wind profile structure of T639 data were consistent with that of sound observe, but there was some different in velocity.The whole layer relative humidity was significant different between sound observe and T639 data, especially at 0000UTC, there were differences in humidity profile's structure and value, and iverse humidity phenomenon wasn't embodied.The difference of temperature mainly reflected in atmospheric boundary layer.The comparison result between automatic weather station data and T639 data shows that the temperature and humidity of T639 data was obviously lower than that of automatic weather station data on the Tibet plateau inland, and the distribution form of wind speed was complete inconsistency.The diurnal variation of surface flux shows that sensible heat flux and momentum flux was slightly larger, and was smaller latent heat flux in Lhasa than that in Linzhi and Qinghai-lake.