Taking homogeneous soil slope as an example, the paper uses limit equilibrium method, including Swedish circle method, simplified Bishop method and Janbu method to conduct slope stability calculation. The effects of different geomechanical parameters and different slope structures on slope stability are assessed and the calculation results were analyzed. Finally, the paper puts forward some measures to prevent slope failure. The results show that: slope stability decreases with the increases of soil density, increases with the increases of soil internal friction angle and cohesion, and decreases with the increase of slope angle; while the total height of the slope is fixed, the slope stability can be effectively improved by using hierarchical slope, factor of safety increases as the slope hierarch adds;while the total height of slope and slope angle is fixed, the factor of safety increases as the platform widens and eventually reaches a stable level; fix the total height and platform width, the bigger of the height difference between adjacent slopes, the smaller of the factor of safety, and when the height is equal, slope stability coefficient reaches the maximum.