Chengdu Basin is located in the front of Longmenshan Mountain，limited between the Longmenshan Mountain and Xiongpo anticline. The two major tectonic systems in the southern margin of Chengdu Basin are the Qiongxi thrust fault system and Xiongpo anticline.The Datang and the Pujiang-Xinjin are the respective major faults with Qiongxi thrust fault system and Xiongpo anticline.The landscape development of the drainages，such as Linxi River and Qingyi River，may have a feedback effect on the Late Quaternary deformation of the tectonic systems.The response relationship between tectonic deformation characteristic and landscape in the southern margin of Chengdu Basin was studied in this paper by interpreting satellite images，conducting field geological investigations，and Digital Terrain Analysis.The late quaternary tectonic deformation characteristic of Qiongxi thrust fault and Xiongpo anticline were emphatically studied in this paper.Our analysis indicates that the middle Pleistocene was an important period of tectonic deformation in the southern margin of Chengdu Basin.Through field investigation，we found that Datang fault is the west reverse fault of the Qiongxi thrust fault system and recent activity along the Datang resulted in the tectonic deformation of Ming-Qiong platform.Pujiang Xinjin fault also dislocated the Yaan gravel layer，which was formed in middle Pleistocene. So the main development and evolution of the Qiongxi thrust fault system and Xiongpo anticline were also in this stage.Because of their tectonic deformation，the ancient Qingyi River had diverted several times left a huge pluvial fan，Ming Qiong platform.Through digital geomorphologic analysis，we derived the drainage sub-basins and their hypsometric interval （HI values） in the Xiongpo area.The swath profile，crossing the southern margin of Chengdu Basin，shows that there are several fold mountains，paralleling the Longmenshan thrust belt.It is the largest terrain gradient zone in study area，and the fold structures also reflect the NW-SE oriented extension of the south segment of Longmenshan thrust belt.We extract the drainage basins from ASTER GDEM data in Xiongpo area and calculated their hypsometric interval （HI values）.The characteristics of the HI values showed that there is a decreasing trend in a SW to NE orientation.The result reflects that the power of the tectonic deformation from the south is stronger to Xiongpo anticline and the deformation process of Xiongpo anticline extended from SW to NE.Our analysis illustrates that the drainage landscape has had an obvious feedback effect on the Late Quaternary tectonic deformation in the southern margin of Chengdu Basin.