A quick and facile microwave method has been employed to prepare Mn3O4/worm-like mesoporous carbon (Mn3O4-MC) composites. Structural and morphological characterizations of worm-like mesoporous carbon and Mn3O4-MC composites have been carried out using X-ray diffraction, transmission electron microscopy, N-2 adsorption-desorption, and electrochemical measurement. Cyclic voltammograms demonstrate that the Mn3O4-MC composites perform improved capacitive behavior at the range of -0.8 similar to 0.2 V (vs. Hg/HgO electrode) with reversibility. The Mn3O4-MC composite electrode possesses an enhanced specific capacitance of 266 F g(-1) at a sweep rate of 1 mV s(-1).