Based on the full analysis of the geological hazard survey data in Hancheng City, with the help of ArcGIS and SPSS software, 11 types of geological hazard probability evaluation factors and 5 types of vulnerability evaluation factors were abstracted. Based on the K-means cluster analysis method, the geological hazard were evaluated. Risks, using systematic clustering method to analyze the vulnerability of elements of risk, and then evaluate the geological hazard risk in Hancheng. The research results show that the results of the geological hazard risk assessment zone are consistent with the actual situation, the evaluation method is reasonable and effective, and the K-means cluster analysis method has the advantages of simple operation, good classification results, and efficient convergence of large data sets. It is in line with traditional AHP and experts Compared with the scoring method, it avoids the influence of human subjective factors. The research on this issue can provide certain theoretical basis and practical guidance for geological hazard risk assessment.