Abstract: Using the National Centers for Environmental Predication Final Analyses (NCEP-FNL) reanalysis data and the temperature of brightness blackbody (TBB) data from FY-2G meteorological satellite, four sets of simulation experiments were carried out on a Tibetan Plateau Vortex process from August 5 to 7, 2015 through WRF model (Version 3.8.1).The influence of cloud radiation effects on the Tibetan Plateau Vortex is studied.The results show that the cloud radiation effect mainly affects the stability of the atmosphere by changing the radiation distribution of the cloud area, thereby affecting the development and structure of the Tibetan Plateau Vortex.In the developing stage, the cloud radiation heating during the daytime suppresses the convection on the south side of the vortex, which facilitates the transportation of water vapor and momentum to the source region of the low vortex.The long-wave cooling of the cloud top at night promotes the convective activity in the vortex area, which is beneficial to the development of the vortex.In the mature stage, the horizontal and vertical distribution of night-time radiation cooling of the vortex core and its surrounding area is conducive to the vertical motion distribution of the vortex core sinking and the periphery rising.And it forms a positive feedback process with the cloud radiation effect, which is conducive to the formation of the vortex eye structure.During the rapid eastward movement of the low vortex, the diurnal changes in cloud radiation heating and cooling regulate the intensity and eastward movement speed of the vortex.When the vortex moves eastward, this effect becomes insignificant.