NOVELTY - Domestic rubbish disposing involves dehydrating rubbish or organic waste. Water and inorganic substance are removed from the dehydrated rubbish or organic waste. The rubbish or organic waste is introduced into a plasma gasifier by a carbon dioxide gas sealing device. A drying section, pyrolysis section and gasification section are equipped on inner side of the plasma gasifier. The rubbish or organic waste is dried, pyrolyzed and gasified on inner side of the plasma gasifier to obtain hydrogen-rich synthesis gas.    USE - Method for disposing domestic rubbish (claimed).    ADVANTAGE - The domestic rubbish disposing method enables to treat rubbish without causing pollution, thus it is suitable for treatment of rubbish, industrial polymer waste and composting waste without any harmful effect.    DETAILED DESCRIPTION - Domestic rubbish disposing involves dehydrating rubbish or organic waste. Water and inorganic substance are removed from the dehydrated rubbish or organic waste. The rubbish or organic waste is introduced into a plasma gasifier by a carbon dioxide gas sealing device. A drying section, pyrolysis section and gasification section are equipped inner side of the plasma gasifier. The rubbish or organic waste is dried, pyrolyzed and gasified on inner side of the plasma gasifier to obtain hydrogen-rich synthesis gas. The hydrogen-rich synthesis gas is mixture of carbon dioxide and hydrogen. A plasma spray gun is installed in the gasification section. Hydrogen and oxygen are added into the rubbish or organic waste to prepare carbon dioxide and hydrogen. A carbonation reaction chamber is installed in the gasification system. Calcium oxide and calcium carbonate are also used for disposing domestic rubbish. Calcium oxide is used as a desulfurization agent. Calcium oxide, dioxin precursor, chloride and sulfide are filled into the plasma gasifier. The pyrolysis gas is introduced in a gas-solid separator and then sent to gasification section of the plasma gasifier for producing methane, tar, ethylene, ethane and water vapor. Gas purification equipment is installed in the plasma gasifier. The gas purification equipment comprises an absorption reactor, a cyclone dust collector, a bag collector and an exhaust heat boiler. Potassium bicarbonate solution is sent to carbon dioxide absorption tower for recycling the rubbish or organic waste. Carbon dioxide is sent to the carbonation reaction chamber of gasification system for performing carbonation reaction with calcium oxide. Hydrogen-rich synthesis gas is catalyzed for producing methanol product in the methanol synthesis reactor. The methanol product is mixed with lime water in a mixing absorber of purification equipment. The non-reacting gas is sent back to the methanol synthesis reactor for recycling reaction. The lime water is sent back to the mixing absorber. Exhaust gas is returned to the plasma gasifier for recycling rubbish or organic waste. An INDEPENDENT CLAIM is also included for a system for disposing domestic rubbish, which comprises a plasma gasifier, a plasma spray gun, a heat exchanger, an exhaust heat boiler and an absorption reactor.