NOVELTY - The method comprises decorating metal nanoparticles on graphene oxide sheets by the action of hydrogen reduction of metal precursors, and reducing the graphene oxide on the scattered graphene oxide sheets absorbed and dissociated with metal nanoparticles by hydrogen atoms. The decorating step comprise mixing graphite and metal oxide precursor in the reactor by ultrasonic dispersion to obtain a suspension of graphene oxide, and decorating metal nanoparticles on graphene oxide by stirring suspension of graphene oxide while injecting hydrogen gas from the bottom of the reactor.    USE - The method is useful for manufacturing a metal nanoparticles-reduced graphene oxide hybrid material by atomic hydrogen, where the hybrid material is useful in a reaction catalyst for fuel cell, gas sensor, electrochemical sensors, chemical reaction for display device and a transparent electrode of a solar cell or a thin film transistor semiconductor layer (all claimed).    ADVANTAGE - The method is capable of rapidly, economically and efficiently manufacturing the metal nanoparticles-reduced graphene oxide hybrid material with high quality and excellent restoration rate.    DETAILED DESCRIPTION - The method comprises decorating metal nanoparticles on graphene oxide sheets by the action of hydrogen reduction of metal precursors, and reducing the graphene oxide on the scattered graphene oxide sheets absorbed and dissociated with metal nanoparticles by hydrogen atoms. The decorating step comprise mixing graphite and metal oxide precursor in the reactor by ultrasonic dispersion to obtain a suspension of graphene oxide, and decorating metal nanoparticles on graphene oxide by stirring suspension of graphene oxide while injecting hydrogen gas from the bottom of the reactor. The injection rate of the hydrogen gas is 10 200 scc/min. The suspension of graphene oxide is stirred at a speed of 100-1000 revolution per minute. The reducing step is performed at a temperature of 50-100 degrees C for 3-24 hours. The reducing step comprises reducing metal nanoparticles on the graphene oxide through hydrogen reduction by the injection of hydrogen gas from the bottom of the reactor, while the metal nanoparticles is decorated on graphene oxide and then drying. An INDEPENDENT CLAIM is included for a metal nanoparticles-reduced graphene oxide hybrid material manufactured by the method.