Conductive　polymer　polyaniline　(PANI)　demonstrates　potential　applications　in　developing　integrated　smart　energy　devices　based　on　the　bi-functional　electrochromic　optical　modulation　and　electrochemical　energy　storage.　One　challenge　is　to　improve　the　structural　stability　of　PANI　films　in　response　to　repeating　doping　and　dedoping　of　anions　during　the　electrochemical　redox　process.　Herein,　a　facile　and　effective　approach　is　developed　for　improving　the　electrochemical　performance　of　PANI　by　coating　onto　the　carbon　nanotube　(CNT)　conductive　networks.　The　introduction　of　CNT　firstly　provides　multiple　directions　for　electron　transfer　and　thus　enhances　the　charge　capacity　of　PANI.　Then,　the　polymerization　of　PANI　onto　the　CNT　(PANI@CNT)　contributes　to　the　formation　of　a　3D　network　film,　which　effectively　reduces　the　structural　failure　caused　by　anions　intercalation　and　extraction.　Compared　with　compact　PANI　film,　a　substantial　promotion　of　bi-function　achieves　in　the　porous　PANI@CNT　one,　whose　optical　transmittance　modulation　increases　to　over　40%　and　the　specific　capacitance　of　the　initial　cycle　is　almost　tripled.　On　the　basis　of　reversible　and　stable　chromatic　transitions　between　different　charged　states,　the　PANI@CNT　electrode　is　further　developed　to　be　a　smart　electrochromic　supercapacitor　exhibiting　visual　energy　storage　level.　We　expect　that　this　work　may　lead　to　new　designs　of　robust　smart　energy　storage　devices.