Based　on　fractal　theory,　this　research　put　forward　the　station-radius　fractal　dimension　which　represents　supply　capacity　of　terminal　in　rail　transit　network　and　transfer　demand-radius　fractal　dimension　representing　the　transfer　demand　of　terminal.　Then　a　consistency　index　based　on　fractal　dimension　was　proposed,　which　represented　the　balance　of　supply　capacity　and　transfer　demand.　With　rail　transit　networks　of　Beijing　as　examples,　simulation　results　confirmed　the　effectiveness　of　the　model　and　algorithm,　and　the　sensitivity　analysis　on　several　important　parameters　from　the　algorithm　was　conducted.　The　impact　of　travel　behavior　on　the　fractal　dimension　and　the　consistency　index　was　discussed.　Results　show　that　the　consistency　index　is　more　effective　to　describe　the　balance　of　supply　and　demand　for　rail　transit　network.