NOVELTY - A catalyst is mixed with mixture bond having cobalt-boron powder and pulp powder, and supplied to reaction tank. Then, reaction solvent, sodium borohydride and sodium borohydride agent are added to reaction tank and reacted to generate hydrogen and water steam. The gas is separated from liquid and water steam, and water steam is condensed to obtain water. The obtained water is recycled after heat exchanging mixed gas of hydrogen and water steam. The hydrogen is purified after separation of gas from liquid and impurities are removed to obtain industrial purified hydrogen.    USE - Manufacture of hydrogen used for fuel battery.    ADVANTAGE - The method provides high-purity hydrogen having high specific energy. The hydrogen provides safe fuel battery having excellent durability.    DETAILED DESCRIPTION - A catalyst is mixed with mixture bond having cobalt-boron powder and pulp powder in weight ratio of 2:0.5-1.5 and supplied to reaction tank. Then, reaction solvent, sodium borohydride (15-30%) and sodium borohydride agent are added to reaction tank. The weight ratio of sodium borohydride, sodium hydroxide and distilled water is 15:2-3:75-85. The resultant material is reacted at 55-65 degrees C to generated hydrogen and water steam in reaction tank. The gas is separated from liquid and water steam is condensed to obtain water. The obtained water is recycled after heat exchanging mixed gas of hydrogen and water steam. The hydrogen is purified after separation of gas from liquid and impurities such as metal, non-metal ion and salt are removed to obtain industrial purified hydrogen having purity of 99.99%. An INDEPENDENT CLAIM is included for hydrogen manufacturing device comprising a liquid storing tank, a liquid delivery pump, a reaction tank, a purifier and a cold and hot exchanger. The inner liquid storing tank is stored with sodium borohydride solution. The liquid storing tank is equipped with cold and hot exchanger. The liquid delivery pump is used to pump sodium borohydride solution to reaction tank through a pipe. The water cold pipe of cold and hot exchanger stretches to reaction tank provided with a catalyst frame and agent feeding opening. The catalyst is installed on catalyst frame. The reaction tank is connected with steam pipe of cold and hot exchanger. The gas outlet pipe of cold and hot exchanger is connected with purifier. The gas outlet of the purifier is connected with air inlet of fuel battery.