Based　on　pedestrian　path　tracing,　this　paper　analyzed　the　influence　of　different　facilities　on　pedestrian　route　choice　path　selection　and　route　utility　in　the　Transfer　area　of　subway　station,　and　the　utility　value　of　the　same　type　facility　in　different　routes.　Through　the　investigation　of　pedestrian　route　choice,　it　studied　the　factors　of　pedestrian　route　choice　in　the　Transfer　area　of　subway　station.　According　to　maximum　utility　theory,　the　improved　multinomial　nested　logit　(MNL)　model　and　route　utility　function　were　established,　and　the　parameters　of　this　model　were　determined.　The　model　analysis　shows　that　pedestrian　route　the　choice　is　related　to　trip　purposes　and　travel　time　on　the　facilities,　and　path　overlap　factor　has　big　effect　on　route　utility.　The　conclusion　provides　proofs　with　the　circumvention　of　the　crowded　path.　The　model　established　has　high　accuracy,　and　could　provide　theoretical　basis　with　the　evaluation　of　subway　station　service　in　the　Transfer　area　of　subway　station.