Abstract: Landslide probability method and safety coefficient method are used to analyze slope stability，and applications of the two methods to stability analysis are contrasted.Selecting six factors of heavy，cohesion，internal friction angle，slope angle，slope height，pore pressure ratio as landslide factors，with 36 slopes as cases，the logistic regression model and deterministic coefficient are adopted to solve the probability of landslide slopes with SPSS software.Combining with the slope safety factor，the stability safety factor and probability of landslide stability of slope examples are classified.Then，after analysis and comparison，the difference for slope stability level between the landslide probability method and the safety coefficient method is obtained.The results show that slope stability level obtained by the two methods is approximately the same，indicating that both of the methods have good applicability and accuracy.Safety coefficient method is relatively mature and trending towards quantitative evaluation.Landslide probability belongs to the qualitative evaluation，but its research method is insufficient.

Key words: Landslide probability, Safety factor, Logistic regression models, Slope stability level, SPSS