Based on ASTER-GDEM (30 m) data and geological information, adopting color-dye, density-class and GIS spatial analysis technology, the authors studied geomorphic characteristics of the northern Great Higgnan Ling Mountains by means of topography-elevation analysis, terrain-section analysis and hypsometric integral. According to the research results, the topographies of the present plain (plateau) and hills in the NNE-trending northern Great Higgnan Ling Mountains are the direct result of multi-stage uplifting. The range is strictly controlled by the NNE-trending regional faults activity, and then affected by the NW-trending faults activity. The northern Great Higgnan Ling Mountains have developed 5-level denudation-planation surfaces with different elevation, whose characteristics are different in the each area due to different erosion and tectonic activity. The NNE-trending faults activity is more obvious in the northern. The research of Hypsometric integral curve significantly suggests the late mature period of geomorphic evolution in the northern Great Higgnan Ling Mountains, because of tectonic uplift tending to stability stage, and a large number of long and narrow NW-trending valleys formed for the response of the NW-trending faults activity.