A　novel　route　is　introduced　to　synthesize　hierarchical　polyaniline-grafted　reduced　graphene　oxide　(rGO)　hybrid　materials　by　polyaniline　nanorods　covalently　bonded　on　the　surface　of　rGO.　Aminophenyl　groups　were　initially　grafted　on　rGO　via　diazonium　treatment.　Then　the　PANI　nanorods　were　aligned　vertically　on　rGO　to　construct　a　three-dimensional　(3D)　structure.　The　3D　structure　could　shorten　the　electronic　transmission　path　and　form　abundant　space　for　electrolyte　ions.　The　hybrid　materials　fabricated　as　supercapacitor　electrodes　exhibited　a　maximal　specific　capacitance　of　1045.51　F　g(-1),　and　the　energy　density　(E)　could　achieve　an　upper　value　of　8.3　Wh　kg(-1)　at　the　current　density　of　0.2　A　g(-1)　simultaneously.　Such　highly　stable　three-dimensional　structural　materials　are　very　promising　for　the　next　generation　of　high-performance　electrochemical　supercapacitors.