Abstract: This article is based on Rough Set theory(RS) and Fuzzy Mathematics Multi-Level Fuzzy theory and method,combining the factors of landslide stability to data mining on the original geological,Obtain the weight factor of geological factors,overcome traditional method to determine the weight coefficient of subjectivity,Get the model of Landslide stability on multi-level fuzzy comprehensive evaluation.Finally,Case of six Layers landslides on the 212 State Road to Verification this theory,Confirmed t...