There are many complicated factors affecting slope stability. Considering the fuzziness and hierarchy feature of the factors

a secondary fuzzy comprehensive judgment model of stability of anchored slope is introduced. By using fuzzy mathematics theory to establish the method of determining membership degree and the operational rule of fuzzy

a secondary fuzzy comprehensive evaluation method is formulated. Taking account of the uncertainties of the importance degree of evaluation indices

the fuzziness of the judgment by experts and the advantage of group decision making

an uncertain analytic hierarchy process(AHP) based on group decision making is developed to calculating the weight vectors. Then fuzzy evaluation method of slope stability based on uncertain AHP is formulated. Finally

the method is used to analyze the practical engineering; it is shown that the method is feasible and reasonable.