Abstract: This study uses analysis method to analyze the characteristics of large-scale circulation and water vapor field of landing typhoons with and without the support of atmospheric river (AR) from 1986 to 2015 based on the JRA55 reanalysis and archived typhoon data. The main conclusions are as follows. Of the typhoons that landed on the mainland China within the 30 year period, the numbers of the typhoons with AR and without AR are roughly equal, and the average duration of the former (38 h) is longer than the latter (22.5 h). After the typhoon with AR support landed, the contour lines of the geopotential height over the typhoon and the subtropical high were very dense, and the typhoon tended to gradually approach the baroclinic front zone as it moved toward the mid-latitude trough. For the typhoon without AR support, the contour lines of geopotential height over the typhoon and the subtropical high were sparse, and there was no support of approaching long wave trough. After the typhoon with AR support landed, it was still connected with the southwesterly low-level jet, and the strong wind core of the typhoon vortex wet area expanded upward. In contrast, the typhoon without AR support was disconnected from the strong water vapor channel after landing. Landing typhoon is a high-value center of water vapor sink. The Indian monsoon circulation in summer and the South China Sea summer monsoon are the main channels for transporting water vapor into the typhoon. For the typhoon with AR support, the magnitude of water vapor transport and the intensity of the convergence were significantly larger than that of the typhoon without AR support, and the water vapor convergence had a quasi-symmetric structure. The typhoon without AR support had an asymmetric structure, and the colder and stronger water vapor transport on its north side accelerated the filling of the typhoon. After the typhoon with AR support landed, a strong water vapor transport always maintained on its southern boundary, and the total water vapor income in the typhoon region decreased slowly. For the typhoon without AR support, the total water vapor income in the typhoon region decreased rapidly. From the perspective of vertical distribution, within 48 h after landing, the typhoon with AR support still had a relatively complete low-level cyclonic circulation structure, and there was net water vapor input along the four boundaries. The cyclonic structure tended to become loose with increasing altitude. The cyclonic circulation structure of the typhoon without AR support was incomplete after 24 h of landing.