The slope unit is divided according to the ridge line and valley line, which can reflect the real geological environment conditions of the study area. As an evaluation unit, it is of great significance in the evaluation of geological hazard susceptibility. With the support of GIS (geographic information system), Taking hydrological analysis tools to obtain slope units in Ebian County, selecting eight factors, including normalized vegetation index, slope, elevation, topographic relief, formation lithology, distance from water system, distance from fault, distance from road, etc., and using logical regression model to obtain the probability map of geological hazard susceptibility, and divides it into non-prone area, low-prone area, medium-prone area High and extremely high risk areas. Conclusion: The accuracy test value of AUC(Area Under Curve) of the ROC (receiver operating characteristic curve) is 0.917, and the number of geological hazards in the extremely vulnerable area and the highly vulnerable area accounts for 81.3% of the total, indicating that it is feasible and highly accurate to evaluate the susceptibility of geological hazards in Ebian County based on the slope unit using logical regression.