Nanosized Au particles were prepared as a cathode catalyst for the direct borohydride-hydrogen peroxide fuel cell (DBHFC) by impregnation methods. The structure and surface morphology of the carbon-supported gold catalyst (Au/C) were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that 10～20 nm Au particles deposited on Vulcan XC-72R carbon black. The cyclic voltammogram (CV) results showed that the onset of reduction current on the Au/C occurred at 0.85 V in 0.5 mol8226;L－1 H2SO4 and 2 mol8226;L－1 H2O2. Also, a simple DBHFC was presented in which the Au/C was used as the cathode catalyst and a hydrogen storage alloy as the anode catalyst. The maximum power density of 78.6 mW8226;cm－2 was obtained at 30 ℃. When operated at 50 ℃, the DBHFC gave a higher than 120 mW8226;cm－2 power density. Furthermore, the effect of H2SO4 and H2O2 concentrations on the performance of DBHFC was described. The results exhibited that the performance of DBHFC had a strong dependence on the acid concentrations when H2SO4 concentration was lower then 0.5 mol8226;L－1, while the H2O2 concentrations had little influence on the performance of DBHFC. The results showed that the optimum concentrations of H2SO4 and H2O2 were 0.5 and 2 mol8226;L－1, respectively.