The Tibetan Plateau is one of the most sensitive regions to global climate change. It is of important theoretical significance to explore the effect of soil moisture changes on near-surfaceair temperature for the study of the water cycle of the Tibetan Plateau and its impact on the surrounding climate and environment. Based on the NCEP-CFSR dataset, this paper reveals the spatial-temporal pattern of soil moisture content in different seasons and different vegetation zones on the Tibetan Plateau, the response and coupling of soil moisture and evaporation rate, and the impact of soil moisture on near-surface air temperature through evapotranspiration. The results show that: (1) The spatial pattern of soil water on the Tibetan Plateau is basically similar in different seasons, showing a decreasing trend from southeast to northwest and the spatial characteristics of drying in humid regions and wetting in arid regions; (2) The soil moisture in most parts of the Tibetan Plateau is in a transitional state, in which the southern and southeastern parts of the plateau are in a state of transition throughout the year, while the soil moisture in the Qaidam Basin is almost in a dry state all the year round; (3) The sensitivity of the near-surface air temperature to soil moisture is the weakest in winter, but the strongest in summer with weak spatial difference, which is negative feedback in winter, spring and summer. Moreover, the sensitivity of air temperature to soil moisture varies greatly in different vegetation coverage areas. This study has important theoretical significance for further exploring the regional water cycle and its effects under the coupled land-atmosphere state and the changing environment of the Tibetan Plateau.