NOVELTY - A catalytic reaction generator comprises reaction vacuum pipe (1), double-cylinder cathode (2), single-cylinder anode (3), holder (4) and four tungsten wiring pillars (5). The double-cylinder cathode and single-cylinder anode are coaxially arranged with reaction vacuum pipe. The center of lower base surface of single-cylinder anode is provided with anode round hole; and the side wall is respectively fixedly connected with tungsten wiring pillar which is penetrated through side wall of the reaction vacuum pipe.    USE - Catalytic reaction generator for coaxial hollow cathode discharging, reacting and acquiring fraction hydrogen.    ADVANTAGE - The generator provides fraction hydrogen with high reaction strength, thus improving density and temperature of plasma.    DETAILED DESCRIPTION - Catalytic reaction generator comprises reaction vacuum pipe (1), double-cylinder cathode (2), single-cylinder anode (3), holder (4) and four tungsten wiring pillars (5). The double-cylinder cathode and single-cylinder anode are coaxially arranged with reaction vacuum pipe. The bottom end of double-cylinder cathode is stretched in upper end of single-cylinder anode or arranged opposite to the upper end of single-cylinder anode. The center of lower base surface of single-cylinder anode is provided with anode round hole; and the side wall is respectively fixedly connected with tungsten wiring pillar which is penetrated through side wall of the reaction vacuum pipe. The center of upper bottom surface of external cylinder of double-cylinder cathode is provided with external cathode hole. The internal cylinder of double-cylinder cathode is stretched from external cathode hole. The upper end of internal cylinder is arranged outside the external cylinder, and is fixedly connected with one end of the holder. The other end of the holder is fixedly connected with two tungsten wiring pillars which are penetrated through the upper base surface of reaction vacuum pipe.    DESCRIPTION OF DRAWING(S) - The drawing is a perspective view of catalytic reaction generator.    Reaction vacuum pipe (1)    Double-cylinder cathode (2)    Single-cylinder anode (3)    Holder (4)    Four tungsten wiring pillars (5)