NOVELTY - A hydrogen generator comprises a high-frequency direct current (DC) power supply, resolution tank and decomposer located in resolution tank. The decomposer comprises rows of anode rod assemblies and cathode rod assemblies, where anodes and cathodes are arranged in parallel and with space. An upper part of each group of anode rod assemblies is covered with an oxygen-chlorine collecting sealed cover with an oxygen-chlorine outlet. An upper part of each group of cathode rod assemblies is covered with hydrogen collecting sealed cover with a hydrogen outlet.    USE - A hydrogen generator for decomposing water at high speed to produce high purity hydrogen and oxygen.    ADVANTAGE - The hydrogen generator has high efficiency and low cost, and saves energy.    DETAILED DESCRIPTION - A hydrogen generator comprises a high-frequency DC power supply, resolution tank and decomposer located in resolution tank. The decomposer comprises rows of anode rod assemblies and cathode rod assemblies, where anodes and cathodes are arranged in parallel and with space. An upper part of each group of anode rod assemblies is covered with an oxygen-chlorine collecting sealed cover with an oxygen-chlorine outlet. An upper part of each group of cathode rod assemblies is covered with hydrogen collecting sealed cover with a hydrogen outlet. An oxygen-chlorine connecting pipe is connected with oxygen-chlorine outlets on oxygen-chlorine collecting sealed covers. A hydrogen connecting pipe is connected with hydrogen outlets on hydrogen collecting sealed covers. The anode and cathode in decomposer are connected to anode and cathode of high-frequency DC power supply through wires, respectively. An oxygen-chlorine purifying device and hydrogen purifying device are connected with oxygen-chlorine connecting pipe and hydrogen connecting pipe, respectively. The anode rod is made of rare earth ceramic, rare earth element, titanium and vanadium. The cathode rod is made of graphite.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of a hydrogen generator.