Although Micro-carbon fibers (ì-CFs) have excellent mechanical, electrical performance as well as highly flexibility, their electrochemical performance for supercapacitors is limited by their intrinsic poor surface area to store electrochemical energy. The decoration of the carbon nanowire (CNW) arrays around ì-CFs was performed to increase the surface area for storage of electrical charge and the chemical active sites for the psuedocapacitve reactions. The CNW arrays were achieved by coating carbonized poly-dopamine on the hydrothermally grown ZnO nanowire arrays around ì-CFs surface. In order to obtain higher energy density, MnO2 which is considered to be the most attractive oxide material owing to high abundance of Mn, low cost, and environment friendly, were deposited on the CNW arrays. The enlarged surface area induced by CNW arrays leads to a 13-fold enhancement in areal capacitance compared to that of bare ì-CFs. The capacitance of MnO2-CNW-CF electrodes reached up to 105.7 mF/cm2 , which is 59 times higher than that of pristine ì-CFs, by combination of highly exposed surface area and transition metals. Also we designed a novel and efficient stretchable fiber-typed supercapacitors by combination of the elastomeric polyurethane (PU) wires as the substrate and H2SO4-poly (vinyl alcohol) (PVA) gel as the solid electrolyte. The stretchable fiber-typed supercapacitors still reached 93.0% of retention in the specific areal capacitance even at 100 % tensile strain. Keywords: Stretchable supercapacitors, Micro-carbon fibers, Carbon nanowire arrays