To　meet　the　requirements　of　vibration　and　noise　reduction　in　hydraulic　pipeline,　a　design　method　of　double-outlet　shear-valve　magnetorheological(MR)　damper　was　proposed.　Based　on　the　Bingham　model　of　MR　damper,　combining　the　structural　design　of　the　MR　damper　with　the　design　of　the　magnetic　circuit,　the　calculation　formula　of　the　structural　parameters　of　the　damper　was　deduced.　A　finite　element　analysis　software　COMSOL　was　selected　to　simulate　the　electromagnetic　field.　An　accurate　and　simple　computational　method　based　on　the　simulation　model　was　established　to　calculate　the　viscous　stress　and　shear　stress　under　different　control　current.　According　to　the　proposed　design　method,　a　prototype　of　MR　damper　was　developed,　and　the　dynamic　mechanical　properties　of　prototype　were　tested.　The　test　results　show　that　the　performance　parameters　of　the　MR　damper　are　basically　identical　with　the　theoretical　design　values,　which　proves　the　correctness　and　feasibility　of　this　design　method,　and　the　design　method　can　simplify　the　design　process　and　reduce　the　volume　of　MR　damper.　©　2019,　Editorial　Department　of　Transaction　of　Beijing　Institute　of　Technology.　All　right　reserved.