Presented　herein　is　a　finite　element　investigation　into　the　damage　mechanism　of　the　adhesive　interface　of　the　rubber-steel　bimaterial.　The　cohesive　element　layer　is　used　at　the　interface　to　simulate　the　initial　loading,　initiation　and　propagation　of　the　damage.　From　the　simulation　results,　it　is　found　that　interface　strength　exert　significant　effects　on　the　crack　formation　in　the　interface.　Smaller　interface　strength　could　lead　to　crack　initiation　more　easily.