To　study　the　impact-resistant　behavior　of　precast　reinforced　concrete　beams　(PC　beams),　five　PC　beams　and　one　reinforced　concrete　beam　(RC　beam)　were　tested　under　free-falling　drop-weights.　The　effects　of　different　assembly　locations　and　grouted　sleeve　compactness　on　the　impact-resistant　behavior　of　PC　beams　were　investigated.　The　crack　patterns,　impact　forces,　reaction　forces,　displacement　and　overall　deformation　energy　dissipation　of　the　specimens　were　described　in　detail.　The　results　obtained　are　as　follows:　1)　the　impact　location,　assembly　position　and　impact　loading　affect　the　failure　types　of　the　specimens　together.　Under　the　impact　loading,　the　longer　distance　between　the　assembly　position　and　impact　position,　the　more　similar　the　mechanical　performance,　including　the　contact　stiffness,　integral　stiffness　and　damage,　is　to　that　of　the　RC　beam;　2)　under　the　impact　loading,　when　the　assembly　position　and　impact　location　are　the　same,　the　local　damage　and　stiffness　degradation　of　the　PC　beam　are　more　serious,　and　its　overall　deformation　energy　dissipation　is　not　as　large　as　the　PC　beams　with　other　assembly　positions　or　the　RC　beam.　In　this　case,　it　is　necessary　to　take　reasonable　measures　to　improve　its　ability　to　resist　shock;　3)　the　influence　of　sleeve　grouting　compactness　on　the　mechanical　properties　of　the　PC　beams　is　significant.　It　will　also　affect　the　damage　form　and　stiffness　of　the　PC　beams;　4)　the　boundary　conditions　of　the　PC　beams＇　assembly　location　is　the　key　to　affect　the　numerical　analysis.　©　2017,　Engineering　Mechanics　Press.　All　right　reserved.