Abstarct: Slopes stability analysis is one of the most important issues in mining activities. Any incorrect analysis can lead to irreparable damage. Types of slope stability analysis methods include numerical, limit equilibrium and experimental methods. In this project, limit equilibrium and numerical methods have been used to analyze the slope stability. The limit equilibrium method has been highly regarded by researchers due to its ease of use, long history and long experience of using them. Numerical methods also require more complex formulations, superpowers and more time to analyze, thus being able to provide more realistic slope behavior. SLIDE software was applied in limiting equilibrium method and two dimensions FLAC software was applied in numerical method. In this thesis, the slope stability of Midook copper mine walls has been studied. Since the presence of groundwater is one of the most important factors affecting the stability of open pit mines, the effect of different levels of groundwater on the safety factor was investigated to obtain a good view of this parameter. Seven cross sections perpendicular to the wall surface were selected for analysis in a way to represent all mine walls. The mining environment was considered as an equivalent continuous environment and the accepted stability criterion for the analysis of slope walls, equal to a safety factor of The results showed that in the limit balance method, sections , ,  and  had a safety factor of less than , and finally, by stabilizing these sections, the optimal slope for sections was proposed. In the numerical method, sections ,  and  were unstable. Moreover, in  different groundwater levels, level , , ,  and  in relation to the mine floor, the amount of safety coefficient was determined for the sections, and the result indicated that by reducing the height of groundwater in relation to the mine floor, the amount of safety coefficient increases.