Abstract: Excavation and landfills in construction have caused a lot of slope problems in the site, which has a huge impact on the production and life of the people. The practical and feasible solutions are put forward to ensure the safety and economic benefits of the project. In this paper, the research object is the slope engineering of section B8B9 of Chongqing Coal Chemical Electrification Park. Through sufficient investigation, clearly defined the engineering geological conditions. Then used FLAC^3D strength reduction method to analyze the slope stability under natural and rainstorm conditions in detail. The results show that:The slope is in an unstable state under natural conditions. Under the influence of rainstorm, the stability will continue to decline, and finally shear failure will occur along the bottom sliding surface of silty clay layer. Considering the factors of safety and economy, designed the anchor protection scheme, which can make the slope stability meet the specification requirements. The research results can provide reference for the stability analysis and protection design of similar slopes.