The　virtual　element　method　(VEM)　is　commonly　used　in　engineering　due　to　its　ability　to　solve　arbitrary　node　meshes.　In　this　study,　we　propose　a　method　to　determine　the　free　surface　of　the　unconfined　seepage　problem　in　soil-rock　mixtures　slope　using　the　advantages　of　the　VEM.　By　cutting　meshes　in　the　iteration,　our　method　overcomes　the　limitation　of　fixed　mesh　in　solving　the　free　surface,　and　the　numerical　tests　confirm　the　accuracy　of　the　proposed　method　in　predicting　the　location　of　the　seepage　surface.　Moreover,　the　results　demonstrate　that　the　presence　of　rock　blocks　significantly　impacts　the　unconfined　seepage　behavior　of　soil-rock　mixtures　slope,　revealing　the　importance　of　considering　rock　blocks　in　the　analysis　of　such　systems.