With　the　rapid　increase　of　the　subway　passenger　volume,　the　conflict　among　passengers　emerges　as　a　significant　issue　which　affects　subway　serviceability,　especially　in　the　bidirectional　flow.　The　aim　of　this　study　is　to　explore　the　characteristics　of　the　bidirectional　flow　of　pedestrians　in　a　subway　corridor.　Pedestrian　experiments　were　conducted　to　investigate　microscopic　characteristics　of　the　pedestrian　flow.　It　was　found　that　the　microscopic　characteristics,　including　the　walking　speed　and　turning　angle,　were　time-dependent　and　had　a　generalized　trend　with　time.　It　was　also　found　that　different　pedestrian　volumes　affected　the　microscopic　characteristics.　Based　on　the　trend　of　the　microscopic　characteristics,　the　lane　formation　phenomenon　was　observed　and　quantitatively　studied,　identifying　three　phases:　conflict　phase,　lane　formation　phase,　and　steady　lane　phase.　To　alleviate　the　bidirectional　pedestrian　conflict,　additional　pedestrian　experiments　for　the　countermeasure　of　adding　separating　strap　in　the　corridor,　which　was　based　on　the　lane　formation　analysis,　was　conducted.　The　effectiveness　of　the　countermeasure　was　demonstrated　through　a　before-and-after　comparison.　The　results　showed　that　adding　the　separation　between　the　adjacent　lanes　had　the　best　performance　in　reducing　the　conflicts.　The　results　would　provide　a　rationale　for　subway　managers　in　optimizing　the　corridor　bidirectional　pedestrian　flow.