In　order　to　improve　the　operation　service　quality　of　passenger　transport　hub,　the　service　engineering　theory　was　used　to　construct　a　service　quality　assurance　system　consisting　of　the　service　quality　definition,　function　deployment,　quality　evaluation　and　quality　feedback.　The　quality　evaluation　system　was　based　upon　four　dimensions　including　efficiency,　content,　resource　and　credit.　Fuzzy　factors　of　service　quality　were　synthesized　by　fuzzy　comprehensive　evaluation　method.　Concrete　improvement　strategies　were　provided　based　on　the　analysis　of　the　gap　between　passenger　perception　and　service　quality.　Finally,　the　typical　passenger　transport　hub　was　used　to　verify　the　indexes　and　method.　The　results　show　that　using　the　service　engineering　theory　to　research　the　hub　service　quality　can　take　into　account　both　the　interests　of　customers　and　operation　management.　Four　dimension　evaluation　index　system　is　clear,　simple　and　practical.　The　fuzzy　comprehensive　evaluation　mode　reflects　the　importance　of　each　evaluation　index　and　the　actual　operation　of　the　whole　hub.　The　quality　improvement　system　can　provide　scientific　decision-making　methods　and　suitable　measures　for　improving　hub　service　level.