Abstract: Using Logistic regression model to determine the weight fuzzy comprehensive evaluation method of the slope stability analysis, is the combination of subjective and objective data analysis method, the evaluation result more let people easy to accept, has good applicability.Select severe, cohesion, internal friction angle, slope angle, pore pressure ratio that five factors as an evaluation factor. stable, relatively stable and unstable, volatile four level as evaluation level of slope.Establish evaluation grade s and the corresponding relationship between the evaluation factors, determine the membership function,establish comprehensive evaluation model. At the same time, using logistic regression model, the application of forty-two slope as an example, using SPSS (Statistical Product and Service Solutions) software to solve regression coefficient and regression coefficient is used to determine the evaluation weights. The comprehensive evaluation model and determine the weight applied to a slope in Long-nan County East River Township Zu-dong test mine, evaluation result is consistent with actual.