Orientated-type　flow　channels　having　porous　blocks　enhance　the　reactant　transfer　into　gas　diffusion　layers　of　proton　exchange　membrane　fuel　cells.　However,　because　of　the　blockages　accounted　by　baffles　and　porous　blocks　in　channel　regions,　pumping　power　increases.　In　this　study,　with　the　aim　of　further　reducing　the　pumping　power　in　flow　channels　with　porous-blocked　baffles,　an　orientated-type　flow　channel　with　streamline　baffles　having　porous　blocks　is　proposed.　By　employing　an　improved　two-fluid　model,　cell　performance,　liquid　water　distribution　and　pumping　power　in　a　single　flow　channel　are　numerically　studied.　The　simulation　results　show　that　the　baffles　with　porous　blocks　increase　the　cell　performance,　and　the　streamline　baffles　with　larger　volumes　further　increase　the　performance;　the　produced　water　in　porous　regions　is　ejected　more　under　inertial　effect,　especially　at　the　regions　near　to　baffles　in　gas　diffusion　layers　and　inside　porous　blocks.　In　addition,　by　using　the　streamline　baffles,　the　excessive　increase　in　power　loss　is　further　reduced.　Moreover,　the　location　and　porosity　effects　of　baffles　with　porous　blocks　are　analyzed.　Simulation　results　show　that　the　location　exhibits　obscure　effects　on　reactant　transfer　and　cell　performance,　while　the　liquid　water　can　be　removed　more　when　the　porous　blocked　baffles　are　concentrated　at　downstream.　The　net　power　is　enhanced　more　when　using　three　porous　blocks　with　the　porosity　of　0.00.　(c)　2020　Hydrogen　Energy　Publications　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.