A　novel　cationic　hydrophilic　interaction　monolithic　stationary　phase　based　on　the　copolymerization　of　2-(methacryloyloxy)ethyltrimethylammonium　methyl　sulfate　(META)　and　pentaerythritol　triacrylate　(PETA)　in　a　binary　porogenic　solvent　consisting　of　cyclohexanol/ethylene　glycol　was　designed　for　performing　capillary　liquid　chromatography.　While　META　functioned　as　both　the　ion-exchange　sites　and　polar　ligand　provider,　the　PETA,　a　trivinyl　monomer,　was　introduced　as　cross-linker.　The　monolithic　stationary　phases　with　different　properties　were　easily　prepared　by　adjusting　the　amount　of　META　in　the　polymerization　solution　as　well　as　the　composition　of　the　porogenic　solvent.　The　hydrophilicity　of　the　monolith　increased　with　increasing　content　of　META　in　the　polymerization　mixture.　A　typical　hydrophilic　interaction　chromatography　mechanism　was　observed　when　the　content　of　acetonitrile　in　the　mobile　phase　was　higher　than　20%.　The　poly(META-co-PETA)　monolith　showed　very　good　selectivity　for　neutral,　basic　and　acidic　polar　analytes.　For　polar-charged　analytes,　both　hydrophilic　interaction　and　electrostatic　interaction　contributed　to　their　retention.　Peak　tailing　of　basic　compounds　was　avoided　and　the　efficient　separation　of　benzoic　acid　derivatives　was　obtained.　©　2008.