An　electrochromic　supercapacitor　is　a　new　type　of　multifunctional　device.　It　can　store　energy,　change　its　optical　properties,　and　its　color　can　intuitively　reflect　the　energy　storage　of　the　device　in　real　time.　This　study　focused　on　W18O49　nanowires　(WNS)　and　polyaniline　(PANI)　electrochromic　materials　and　their　thin-film　electrodes.　Graphene　oxide　was　incorporated　in　the　process　of　solvothermal　preparation　of　WNS　and　graphene/W18O49　nanowires　composite　(rGO-WNS)　was　obtained.　Compared　with　WNS,　the　electron　transport　capability　of　rGO-WNS　is　improved,　which　effectively　reduce　the　discoloration　time　from　7　to　4　s　and　the　coloring　time　from　10　to　2　s.　In　addition,　the　coloration　efficiency　has　also　improved　from　45.37　to　52.72　cm(-2)center　dot　C-1,　however,　the　optical　modulation　amplitude　of　the　composite　is　reduced　from　35　to　20%　due　to　the　obstruction　of　graphene　to　the　transmittance.　A　characteristic　pseudocapacitive　behavior　is　observed　for　rGO-WNS　and　PANI　electrodes,　which　were　assembled　in　pairs　to　form　an　EC　supercapacitor　(ECSC)　device.　With　the　voltage　increased　from　-　0.2　to　1.4　V,　the　color　of　ECSC　varies　among　light　green,　dark　green,　light　blue　and　dark　blue.