Fuel　cell　vehicles　experience　vibration　situations　during　driving　processes,　meanwhile,　vibration　affects　liquid　water　evolution　inside　the　fuel　cell.　Understanding　gas/water　transportation　behaviors　inside　fuel　cell　channels　under　vibration　conditions　facilitates　better　optimizing　water　management　especiallyat　vibration　situations.　With　this　purpose,　in　this　study,　effects　of　vibration　behaviors　that　simulate　real　road　conditions　on　gas　and　water　transportation　as　well　as　the　cell　performance　are　investigated　by　experimental　method.　The　changes　of　the　inside　water　transportations　inside　the　channel　during　switching　are　observed　by　using　a　transparent　window　constructed　in　fuel　cell　end-plates.　The　experimental　results　show　that　the　vibration　degrade　the　cell　performance　by　up　to　8.34%.　Comparing　with　horizontal　vibration,　vertical　vibration　has　more　adverse　effects　on　performance　and　it　can　degrade　the　cell　performance　by　up　to　5.99%;　larger　the　amplitude　and　vibration　frequency　result　in　lower　cell　performance.　When　vibration　occurs,　the　amplitude　and　number　of　movements　of　the　water　column　increase　significantly,　and　liquid　water　occurs　inside　channel　regions,　resulting　in　flooding　in　the　cell,　and　the　water　block　transferring　path　of　the　gas　diffusion　layer,　resulting　in　reactants　transportation　blocking　and　gas　resistance　increase,　which　eventually　reduces　the　cell　performance.