In　this　paper,　a　modified　floor　field　model　is　proposed　to　study　dynamics　of　counter　flow　in　a　corridor　involving　various　types　of　members,　i.e.,　normal　pedestrians,　pedestrians　on　crutches,　seniors　with　sticks,　pedestrians　in　manual　wheelchairs　and　blind　pedestrians.　Multi-speed　characteristics,　occupation　difference　and　typical　behaviors　(i.e.,　overtaking,　helping　and　avoidance　behaviors)　are　simulated　in　our　model.　Through　simulations　in　bidirectional　flow,　typical　phenomena　(namely　lane　formation　and　congestion)　are　created.　The　negative　effect　of　the　proportion　of　individuals　with　disabilities　on　movement　efficiency　of　heterogeneous　counter　flow　is　reproduced.　Results　suggest　that　appropriate　overtaking　willingness　has　a　positive　influence　on　pedestrian　counter　flow.　Helping　behavior　can　induce　pedestrian　counter　flow　more　orderly,　and　improve　crowd　movement　efficiency.　The　proposed　model　is　helpful　to　enrich　modeling　approaches　for　individuals　with　disabilities,　and　is　beneficial　to　heterogeneous　crowd　management.　©　2021