NOVELTY - A direct combined fuel cell of sodium borohydride-hydrazine, comprising fuel cell connected to the blower, fuel tank and micro transfer pump, where the outlet at bottom of the fuel tank is connected to the micro transfer pump and fuel cell via the pipeline in turn; outlet of the fuel cell is connected to the top of the fuel tank; the fuel tank is provided with gas outlet and filling opening of the fuel at the top and outlet of residual liquid at bottom; fuel solution cycles via the micro transfer pump; and fuel in the fuel tank is mixed aqueous solution of borohydride-hydrazine.    USE - A direct combined fuel cell of sodium borohydride-hydrazine (claimed).    ADVANTAGE - The addition of the hydrazine is able to improve the stability of the borohydride and the hydrazine capable of improving the energy density of the fuel makes the production of hydrogen more convenient, the energy density higher and improves the working efficiency of the fuel cell.    DETAILED DESCRIPTION - A direct combined fuel cell of sodium borohydride-hydrazine, comprising fuel cell connected to the blower, fuel tank and micro transfer pump, where the outlet at bottom of the fuel tank is connected to the micro transfer pump and fuel cell via the pipeline in turn; outlet of the fuel cell is connected to the top of the fuel tank; the fuel tank is provided with gas outlet and filling opening of the fuel at the top and outlet of residual liquid at bottom; fuel solution cycles via the micro transfer pump; fuel in the fuel tank is mixed aqueous solution of borohydride-hydrazine; the solution is prepared by dissolving the powders of the borohydride in the hydrazine hydrate (N2H4.H2O) at normal temperature and normal pressure and adding water so as to modulate the rate of the borohydride, hydrazine and water in the mixed aqueous solution to 100:20-100:100-200 by weight; the fuel cell comprises cathode, anion exchange membrane and anode; the base materials of electrode of the anion is carbon paper where the noble metal catalyst Pt, Pd, Au, Ag or their alloys, non-noble metal catalyst Ni, Fe, Co, Mn, Cr, Ti or their alloy or hydride storing materials, one of MmNi5-xMx and Zr1-xTixNi2-yNy are attached.    x=0.01-0.5;    y=0.01-0.5; and    Mm=mixed rare earth elements.    DESCRIPTION OF DRAWING(S) - The drawing shows a diagram of the combined fuel cell of sodium borohydride-hydrazine.