To provide a waste regeneration method and a waste regeneration system for small-to-medium-sized facilities, capable of efficiently and simply carrying out gasification and gas reforming of solid waste simultaneously with carbonization of the wastes in one furnace and capable of readily controlling calorie and stably carrying out gasification and efficiently regenerating a carbonized material, a useful gas and a liquid fuel even if the apparatus is small-scale.

The solid waste is charged into a carbonizing and gasifying furnace downwardly inclined together with superheated steam from the inlet side to the outlet side and the waste is heat-decomposed and carbonized without causing combustion by indirectly heating the waste in a state blocked from air by an electric heater in the carbonizing and gasifying furnace and at the same time, the amount of deposition of the carbonized material in the furnace is increased toward the outlet side and water-gas-shift reaction is caused by the heat to produce a dry distillation gas mainly containing hydrogen and carbon monoxide. The dry distillation gas is converted to liquid fuels by using a Fischer-Tropsch catalyst.