Abstract: In this paper, the GIS is as the major visualization evaluation tool for the geological hazard sensitivities in Tongliang District, Chongqing City. Six (6) factors, namely, slope of the topography, bedrock inclinations (incline or anticline), bedrock stratigraphy, distance to the waterway system, distance to the active structural tectonics and precipitations, are considered in the evaluation. The results show that: (1)the geological hazards in the study area are mostly occurred in the area with a topographical slope between 10° and 30°, the bedrock inclination direction towards southeast and south, and the bedrock stratigraphy formation of Middle Jurassic Upper Shaximiao Formation; Geological hazards are prone to occur in areas less than 200m away from the waterway system. The probability of the geological hazards is significantly higher in the area with monthly accumulated precipitation greater than 80mm than in the area with rainfall less than 80mm. (2)The existing geological hazard points are mainly distributed in the northeast and south of the study area, and they are concentrated and banded; (3)The area of high sensitivity and sensitive area accounted for 49.22% of the total area; The number of geological hazards in high sensitivity and sensitive area accounts for 90.74% of the total number of existing geological hazards.

Key words: Geological Hazards, Sensitivity Evaluation, Geographical Information System, Tongliang District