Reasonable　setting　of　transit　station　catchment　areas　lays　the　foundation　for　predicting　the　transit　station　travel　demand　and　designing　feeder　measure　layout.　The　paper　aims　to　overcome　some　shortcomings　in　previous　researches　such　as　seldom　considering　the　characteristics　of　local　road　networks,　as　well　as　the　problems　of　catchment　area　coincidence　and　potential　catchment　areas　determination.　Based　on　an　passenger　investigation,　the　paper　presents　a　method　to　determine　the　catchment　area　with　consideration　of　the　grid　type　road　network　characteristics.　With　the　introduction　of　the　Thiessen　polygon,　it　solves　the　coincidence　problem　of　catchment　areas,　and　then　presents　a　delineating　method　for　potential　catchment　area.　Finally,　the　Geographic　information　system　is　used　to　establish　the　catchment　area　of　Beijing　Transit　stations.　Several　feeder　measure　layout　schemes　are　also　generated　for　each　station　considering　its　catchment　area　characteristics.　Research　findings　provide　a　theoretical　basis　for　the　future　work　of　transit　station　catchment　area　such　as　land　use,　travel　demand　forecasting　and　feeder　measure　layout.　It　may　also　assist　to　enhance　the　operation　efficiency　of　urban　public　transportation　system　in　the　long　run.　©　2011　by　Science　Press.