This　paper　aims　to　investigate　the　influence　of　particle　breakage　on　the　dynamics　and　deposition　of　rockslides.　A　rigid-body　finite　element　formulation　incorporating　bond　beam　element　is　proposed　to　model　rock　breakage　behaviors.　This　approach　enables　simulations　of　particle　fragment　rolling,　collisions　between　adjacent　pieces,　and　impacts　of　pieces　with　the　bedrock.　Numerical　analyses　were　conducted　considering　the　variations　in　volumes,　breakage　modes,　breakage　efficiency,　and　the　friction　coefficient　of　bedrock　surfaces.　Simulation　results　demonstrate　a　negative　linear　correlation　between　the　runout　distance　and　the　volume　of　rock　blocks.　Incorporating　fragmentation　effects,　this　study　reveals　that　the　breakage　efficiency　of　maternal　rock　blocks　significantly　influences　the　energy　dissipation　process　and　the　downslope　movement　of　rockslides.　Despite　variations　in　breakage　modes　leading　to　distinct　deposit　configurations,　run-out　distances　remain　basically　consistent.　Analysis　of　block　contributions　from　various　source　locations　indicates　that　the　longitudinal　spreading　of　the　deposit　primarily　depends　on　blocks　distributed　on　the　periphery　of　the　rock　mass.　©　The　Author(s)　2024.