Abstract：Slope stability safety factor is influenced by many factors，in which the condition of water table change affects greatly. The analysis and calculation of the stability safety factor based on diversified slope models indicate that there are certain rules of effect of water table on soil slope stability. Through calculation of the stability factor of the slope with two different software based on theory of limit equilibrium，it is shown when the water table changing between the range of 3/10-4/10 the height of the slope，it affects the stability of the slope negligibly. With the water table rising，the safety factor linearly reduces，and it is likely to induce landslide.
