In order to investigate the influence of anchor cable anchoring parameters on the stability of rock slopes，a numerical model was established for engineering slopes，and the relationship between the length，spacing，and prestress of anchor cables and slope stability was analyzed using the Slope/w module in GeoSlope software. The results indicate that increasing the length and prestress of anchor cables can improve the safety factor of the slope，while increasing the spacing between anchor cables can have adverse effects on the stability of the slop. Adding anchor rods to slopes can effectively reduce the deformation and risk of slopes，and enhance slope stability. The research results can provide reference value for the selection of engineering design parameters similar to slope stability.