The experiment has been carried out to elucidate the fundamental combustion characteristics of solid water fuels in high temperature and low oxygen atmosphere by using the flowing combustion gas. The results obtained here are as follows : the combustion behavior of solid waste fuels in flowing combustion gas can be classified into three sequential regimes of ignition luminous flame and surface combustion, and the ignition delay in very insensitive for the increase of oxygen concentration, though it is very sensitive for the increase of ambient temperature.