In　this　paper,　a　facile　method　was　introduced　to　prepare　the　hierarchical　composite　that　the　aligned　Co2+　doped　PANI　nanowires　and　twining　Co2+　doped　PANI　nanofibers　were　delicately　synthesized　on　the　graphite　fiber　(Co2+　doped　PANI/gf).　The　structure　of　Co2+　doped　PANI　was　confirmed　by　Fourier　transform　infrared　spectroscopy　and　X-ray　photoelectron　survey.　The　scanning　electron　microscopy　showed　that　the　surface　morphology　of　Co2+　doped　PANI/gf　could　be　controlled　by　adjusting　the　molar　ratio　of　An/Co2+　and　the　aniline　concentration.　The　Co2+　doped　PANI/gf　hierarchical　composite　exhibited　a　high　specific　capacitance　of　562 F/g　at　0.2 A/g　and　presented　excellent　cycling　durability　that　it　retained　92.9%　of　the　initial　specific　capacitance　after　1000　cycles　at　a　scan　rate　of　100 mV/s.　The　improved　electrochemical　performance　suggested　a　promising　application　of　the　Co2+　doped　PANI/gf　hierarchical　composite　in　high　performance　supercapacitor.　©　2017,　Springer　Science+Business　Media,　LLC.