Gradually,　with　the　accomplishment　of　a　subway　network　system　in　Beijing,　more　and　more　passengers　need　to　transfer　between　different　lines.　Because　of　the　mass　volume　and　design　problem,　most　of　the　transfer　stations　only　have　one　passageway　for　one　transfer　direction.　The　transfer　stations　become　the　busiest　at　the　weakest　points　in　the　subway　system.　But,　because　of　the　arrival　pattern,　the　relationships　among　traffic　parameters　of　transfer　pedestrians　are　quite　different　from　traditional　random　traffic　flow.　Thus,　a　comprehensive　understanding　of　the　transfer　traffic　characteristics　will　be　very　useful　to　the　pedestrian　traffic　organization　and　facilities　design　in　transfer　stations.　Based　on　two　weeks＇　investigations　at　transfer　stations　in　Beijing,　this　paper　gives　the　traffic　characteristics　of　transfer　pedestrians　on　passageways,　such　as　the　change　of　the　traffic　volume　during　a　whole　day,　the　free　walking　speed,　and　especially　the　relationship　between　traffic　parameters　and　time.　©　2011　ASCE.