With　economic　development,　we　are　facing　a　motorized,　urbanized　and　marketized　challenge　for　the　sustainable　development　of　urban　transportation.　For　the　future　development　of　new　city　transit　in　Beijing,　this　paper　implements　a　＇people-oriented,　comprehensive,　coordinated　and　sustainable,＇　scientific　development　concept,　and　also　puts　forth　a　multi-level　public　transit　network　fuzzy　evaluation　to　meet　the　requirement　of　sustainable　development.　TRANSCAD　software　is　used　to　build　a　demand　forecasting　model　of　new　city　public　transit　network　in　the　future.　Based　on　the　scientific　development　concept,　this　paper　establishes　a　comprehensive　evaluation　index　system,　which　includes　an　accessibility　index,　a　comfort　index,　a　network　performance　index　and　a　coordination　index.　Every　index　is　given　a　different　weight.　Finally,　it　builds　a　multi-level　public　transit　sustainable　fuzzy　evaluation　combined　with　traffic　simulation　software　TRANSCAD,　and　also　gives　a　specific　analysis　example.　It　is　of　great　significance　for　overall　sustainable　development　of　urban　transport,　and　for　social　and　economic　progress.　©　2011　ASCE.