A new hydrogen production method, HyPr-RING (Hydrogen Production by Reaction Integrated Novel Gasification), fi om organic compounds has been proposed. The fundamental concept of this process is integration of the water-hydrocarbon reaction, water-gas shift reaction, and the absorption of CO2 and other pollutants in a single reactor. Hydrogen productivity from the reactions of organic material(s) with supercritical water was investigated in ranges of pressure 12-105 MPa and temperature 873-973 K by using a micro-autoclave. CO2 was absorbed by a sorbent during the reactions in the micro-autoclave. It was found that H-2 and CH4 as the major product gases can be produced from lignite, subbituminous, bituminous, and several organic wastes. For example, 170 cm(3) of gas with-about 80% H-2 and 20% CH4 was produced from 0.1 g of the subbituminous Taiheiyo coal, at 923 K. In this case, about 90% of the carbon in the Taiheiyo coal was converted to produce H-2 and CH4. Some organic materials including chlorine and sulfur, such as the poly(vinyl, chloride) and the sludge, also;produced gases that mainly contained H-2, CH4, and no chlorine or sulfur gases.