Dehydration　of　ethylene　glycol　(EG),　a　valued　product　in　chemical　industries,　was　efficiently　implemented　by　pervaporation　with　a　graphene　oxide　(GO)-incorporated　polyelectrolyte　complex　nanoparticles　(PEC　NPs)　membrane.　GO-incorporated　PEC　NPs　with　solution　processability　were　prepared　through　a　new　strategy　of　＂complex　precipitation-redispersion＂.　The　PEC　NPs-based　membranes　were　prepared　via　solution　casting,　and　their　structural　characteristics　and　hydrophilic　property　were　investigated　systematically.　Spherical　PEC　NPs　building　blocks　increase　cavities　and　thus　flux　of　the　membranes,　while　the　tightly　associated　ion-pair　structure　coupled　with　strong　interface　interactions　between　regularly-arranged　GO　nanosheets　and　PEC　matrix　led　to　good　separation　factor.　In　detail,　the　resulted　membrane　PEC　NPM/GO-3　presented　a　flux　of　961　gm(-2)　h(-1)　and　water　in　permeate　of　99.25　wt%　in　dehydrating　10.0　wt%　water/EG　mixtures　at　60　degrees　C.　Moreover,　the　PEC　NPM/GO-3　showed　a　tensile　strength　of　139.1　MPa　and　higher　long-term　operation　stability,　which　was　important　for　commercial　application.