Abstract: Xingyi,Guizhou Province has a unique geological heritage resource-karst landform.The study of its geomorphological characteristics and causes is an important support for the development and management of geological tourism in Guizhou.According to the field investigation,karst landform of Xingyi shows different types:cone karst,tower karst and needle karst.Additionally,the vertical distribution of karst caves is concentrated in three areas:1 380-1 450m,1 250-1 280m,and 1 150-1 180m.In this paper,aided by ArcGIS software,it was found that the law of the three-level elevation range of karst caves was also reflected in the law of terrain height difference in Xingyi,Guizhou.A large number of karst caves were distributed in the densely developed areas of the river valley,and the flow direction of the river valley was consistent with the structural weak zone.Under this research background,the causes of geomorphology and landscape were analyzed,including the influences of lithology,structure,hydrology,altitude and other factors on karst geomorphology distribution.