The　bond-slip　interaction　between　reinforcing　steel　and　concrete　plays　a　crucial　role　in　transferring　stress　and　the　synergistic　mechanical　behavior　of　reinforced　concrete　members.　Based　on　the　interface　tensile　mechanism　of　reinforcing　steel　and　concrete,　a　novel　simple　bond-slip　model　was　developed　to　consider　the　tensile　fracture　behavior　of　the　interface　in　different　stress　stages.　According　to　the　influencing　factors　including　concrete　strength,　cover　thickness,　reinforcing　steel　rib　spacing,　stirrup　arrangements,　reinforcing　steel　diameter　and　anchorage　length,　characteristic　points　are　established.　The　results　show　that　the　calculated　results　of　this　model　agree　well　with　the　experimental　results　under　monotonic　loading.　Finally,　the　different　stages　of　slip　behavior　are　simulated　with　the　elastic,　plastic　and　damage　behavior　of　the　connector　elements　according　to　a　three-dimensional　modeling　method.　Comparisons　that　were　performed　between　the　nonlinear　numerical　simulations　and　theoretical　results　have　clearly　shown　that　the　connector　element　can　predict　the　interface　behavior　of　reinforcing　steel　and　concrete.