The　Forchheimer＇s　inertial　force　impact　is　always　neglected　when　studying　the　mass　transfer　of　proton　exchange　membrane　fuel　cells　in　previous　literatures.　In　this　work,　firstly,　driving　forces　affecting　liquid　droplets　on　gas　diffusion　layer　surfaces　are　analyzed,　and　it　is　found　that　the　impact　of　Forchheimer＇s　inertial　force　becomes　non　neglected　when　the　Reynolds　number　is　increased.　Therefore,　a　two-dimensional,　non-isothermal,　steady-state　and　modified　two-fluid　model,　which　considers　the　Forchheimer＇s　inertial　force　impact,　is　developed　for　the　first　time.　The　modified　two-fluid　model　is　validated　by　comparing　with　experimental　data　and　conventional　two　fluid　model　results.　The　results　indicate　that　the　modified　two-fluid　model　results　can　match　the　experimental　data　quite　well　under　various　flow　rates　in　both　the　fuel　cell　with　a　straight　flow　channel　and　that　with　a　baffled　flow　channel.　Moreover,　the　liquid　water　saturation　distribution　is　also　studied　by　using　the　modified　two-fluid　model.　When　considering　the　Forchheimer＇s　inertial　force　impact,　comparing　with　the　conventional　two-fluid　model　results,　liquid　water　saturations　in　flow　channels,　gas　diffusion　layers　and　catalyst　layers　are　reduced　by　5.69%,　5.56%　and　4.22%,　respectively,　in　the　proton　exchange　membrane　fuel　cell　with　baffled　flow　channels.