In　this　paper,　game　theory　method　was　adopted　to　investigate　the　effect　of　introducing　the　online　car-hailing　service　as　a　new　trip　mode,　the　strategic　interactive　relationship　between　the　online　car-hailing　service　and　the　incumbent　(taxi).　The　incumbent　adjusts　the　trip　cost　and　take　different　strategies　to　cope　with　the　situation　whether　potential　entrant　enters　(online　car-hailing　service)　the　market　or　not.　Assumed　that　the　users　select　the　trip　mode　based　on　the　Value　of　Time　(VOT)　function　to　calculate　the　demand　equilibrium　under　the　given　demand.　Based　on　the　two-stage　game　model,　the　market　equilibrium　of　different　strategies　were　calculated,　the　profits　of　trip　modes　and　the　total　social　cost　in　equilibrium　status　were　used　to　evaluate　the　effects　of　the　strategies.　Finally,　a　case　study　integrated　with　the　practical　data　was　put　forward.　The　results　show　that,　the　total　social　cost　reduces　after　introducing　the　car-hailing　service　to　the　market,　although　it　brings　down　the　profits　of　taxis.　Therefore,　a　rational　development　of　car-hailing　service　is　economically　feasible.　Copyright　©　2019　by　Science　Press.