Conduction polymer nanowires arrays have promising applications in supercapacitor electrode materials. In this paper, It reported a facial approach to synthesize microporous carbon-polyaniline nanowire (MC/PANI) composites, the working electrode was prepared with the MC/PANI composites, and the electrochemical capacitance of it were characterized by cyclic voltammetry, A.C. impedance and galvanostatic charge-discharge in 1 mol/L H2SO4 solution, The result indicated that specific capacitance of the MC/PANI electrode can be high as 329 F/g at a current density of 0.2 A/g, which is higher than 259 F/g of PANI electrode at the same condition, the charge transfer resistance(Rct) of MC/PANI is smaller than MC or PANI. therefore, it is demonstrated that the PANI nanowires could enhance the electrochemical performance of electrode materials.