NOVELTY - Kitchen garbage is smashed to grain diameter of 5-10 mm, and mud is sieved through 1.25 mm sieve. Then phenol, water, and carbon to nitrogen ratio are detected, and water is added to make the water content of kitchen garbage to 90%. Mineralized garbage is added to mixture of mud, kitchen garbage and percolate, obtained composition is stirred to obtain a mixture. The obtained mixture is added to a closed container, nitrogen is passed to remove oxygen, subjected to anaerobic digestion or stirred and reacted, to obtain methane and hydrogen mixed gas.    USE - Method of using mineralized garbage, percolate, kitchen garbage and mud for production of methane and hydrogen for generating electricity and lighting fire well.    ADVANTAGE - The method simply and economically provides methane and hydrogen using mineralized garbage, percolate, kitchen garbage and mud.    DETAILED DESCRIPTION - Kitchen garbage is smashed to grain diameter of 5-10 mm, and mud is sieved through 1.25 mm sieve. Then phenol, water, and carbon to nitrogen ratio are detected, and water is added to make the water content of kitchen garbage to 90%. Mud, kitchen garbage having water content of 90% with respect to mud, and percolate are then taken in the ratio of (10-90%):(5-45%):(5-45%) and mineralized garbage (5% with respect to total weight of kitchen garbage, percolate and mud) is added, to obtain a composition. The obtained composition is mixed uniformly and stirred by maintaining pH at 5.8-6.2 and carbon to nitrogen ratio at 7-7.5, to obtain a mixture. The obtained mixture is added to a closed container, nitrogen is passed to remove oxygen, subjected to anaerobic digestion at speed of 100-130 rotation/minute or stirred. Then, reacted at 20-55 degrees C for 15 days, to obtain methane and hydrogen mixed gas in which the hydrogen concentration is 4-10 volume% and methane concentration is 55-57 volume%. The mud is filter-pressed mud of biochemistry sewage treatment work. The percolate is fresh percolate of burned plant. The mineralized garbage is buried for more than 8 years.