Highly　conductive　leaflet-like　poly　(3,4-ethylenedioxythiophene)/single-walled　carbon　nanotube　(PEDOT/SWCNT)　composites　were　successfully　synthesized　via　a　facile　method　in　a　ternary　phase　system.　Scanning　electron　microscopy　and　transmission　electron　microscopy　observation　denoted　that　SWCNT　core　was　uniformly　coated　with　PEDOT　shell.　More　interestingly,　on　the　surface　of　the　resultant　PEDOT　shell　a　large　number　of　PEDOT　substructures　were　found　to　form　by　adjusting　the　molar　ratio　of　water　to　the　surfactant　(defined　as　N).　The　leaflet-like　PEDOT/SWCNTs　entangled　together　as　a　nanoporous　conductive　network.　Measurements　of　microwave　absorption　revealed　that　the　conductivity,　layer　thickness　and　mass　fraction　of　the　leaflet-like　PEDOT/SWCNTs　have　great　impacts　on　the　microwave　absorbing　property.　It　was　found　that　the　sample　with　10　wt%　PEDOT/SWCNT　content　exhibited　much　more　effective　absorption　performances.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.