The　main　objective　of　this　study　is　to　investigate　the　dynamic　mechanical　properties　and　crack　propagation　law　of　rock-like　materials　with　different　joint　dip　angles.　The　precast　cement　mortar　specimens　are　impacted　by　split　Hopkinson　pressure　bar　(SHPB).　The　meso　damage　of　the　specimens　before　and　after　impact　is　detected　by　nuclear　magnetic　resonance　system　(NMR),　and　the　crack　propagation　path　is　extracted.　The　influence　of　joint　dip　angles　on　dynamic　response　characteristics　of　rock-like　materials　is　analyzed　from　the　aspects　of　dynamic　compressive　strength,　meso　damage　and　crack　propagation　path.　The　analysis　indicates　that　joints　make　the　internal　stress　distribution　of　rock-like　materials　uneven,　resulting　in　the　weakening　of　the　dynamic　compressive　strength　of　rock-like　materials.　At　the　same　time,　joint　characteristics　affect　the　weakening　degree　of　the　dynamic　compressive　strength　of　rock-like　materials.　With　the　increase　of　joint　dip　angle,　the　weakening　degree　of　dynamic　compressive　strength　of　rock　like　materials　first　increases　and　then　decreases.　The　relationship　between　the　damage　degree　and　the　dynamic　compressive　strength　of　rock-like　materials　is　approximately　negative　linear.　With　the　increase　of　joint　dip　angle,　the　damage　degree　changes　in　an　inverted　＂U＂shape.　Tensile　stress　or　the　combination　of　tensile　stress　and　shear　stress　leads　to　the　initiation　and　propagation　of　cracks.　The　intact　specimens,　the　specimens　with　joint　dip　angle　of　0　,　and　the　specimens　with　joint　dip　angle　of　90　develop　axial　tensile　cracks.　The　specimens　with　joint　dip　angles　of　15　-75　develop　tensile　cracks　and　shear　cracks　at　the　joint　tips.　©　Published　under　licence　by　IOP　Publishing　Ltd.