In　this　work,　the　effects　of　induced　field　generated　by　the　magnetized　wall　on　the　static　normal　force　of　magnetorheological　fluids　have　been　studied　both　theoretically　and　experimentally.　Firstly,　the　magnetic　field　distributions　between　two　parallel　ferromagnetic　sheets　in　a　uniform　field　have　been　investigated.　The　magnitude　and　direction　of　normal　force　created　by　the　field　gradient　in　different　field　regions　are　calculated　based　on　the　Biot-Savart　theorem.　In　an　attempt　to　obtain　the　correspondences　between　the　magnetization　of　the　magnetized　sheets　and　the　magnetic　flux　density　of　the　field,　we　designed　a　uniform　magnetic　field　generator　for　measuring　the　induced　field　of　the　magnetized　sheets.　The　static　normal　forces　of　30%　volume　fraction　magnetorheological　fluids　with　or　without　magnetized　wall　condition　have　been　measured　by　a　commercial　plate-plate　rheometer,　and　the　field　fluctuation　at　the　edge　of　the　magnetized　sheet　has　been　validated　by　controlling　the　radius　of　test　area.　The　experimental　results　indicated　that　the　magnetized　sheets　with　a　thickness　of　0.2　mm　can　increase　the　static　normal　force　by　up　to　20%　when　the　thickness　of　suspensions　is　0.5　mm.　But　the　increment　is　limited　by　the　saturation　magnetization　of　material　itself,　in　addition,　the　non-uniform　magnetic　field　of　the　magnetized　sheets　will　adversely　affect　the　increase　of　the　static　normal　force.　The　experimental　results　are　basically　consistent　with　the　theoretical　analysis　when　the　radius　of　test　area　is　8　mm,　but　underestimate　the　field　increment　for　the　10　mm-radius　case　which　may　caused　by　the　uneven　distribution　of　particles.　©　2020　Elsevier　B.V.