Abstract: Southeast coastal areas are affected by typhoon rainstorms throughout the years, which resulting in frequent geological disasters. Take Shiyang Town, Taishun County as the research area, this paper considered the formation mechanism of typhoon rainstorm geological hazard comprehensively. Also, nine influencing factors, including slope, aspect, slope shape, topographic relief, fault, engineering geological rock formation, loose layer thickness, land development intensity and highway cut slopes were selected from the aspects of topographical conditions, geological conditions and human engineering activities to evaluate the susceptibility of geological hazard in a small area at the township scale based on the ArcGIS slope unit data model, coupling certainty coefficient(CF)and analytic hierarchy model(AHP). Moreover, Shiyang Town was divided into extremely susceptible area, susceptible area, mildly susceptible area and low susceptible area in line with the susceptibility of geological hazard according to the evaluation result of the coupling model. The evaluation accuracy of the coupling model was also tested using the distribution and success rate curves of various geographic disaster points under different susceptibilities. The result shows that the evaluate division of the coupling model is reasonable with the evaluation, and the evaluation accuracy is 84.6%.