To provide a pyrolytic furnace for industrial wastes capable of uniformizing the temperature distribution in a pyrolytic chamber.

This pyrolytic furnace for industrial wastes comprises a pyrolytic chamber 11 for charging the industrial wastes thereinto, an outer wall, provided in a state thereof surrounding the pyrolytic chamber 11 and having heat insulating properties and a heating means 17 for heating the pyrolytic chamber 11 from the outside. In this case, the pyrolytic furnace is composed by installing a surrounding member 11a, connectedly provided on the periphery of the bottom of the pyrolytic chamber 11, protrusively and downwardly installed in order to form a bottom heat retention space 11d and having a prescribed vertical length, a flame shutting off member 11c provided between the bottom of the pyrolytic chamber 11 and the heating means 17 so as not directly expose the bottom of the pyrolytic chamber 11 to a flame and a space forming member 11b, installed connectedly so as to provide the periphery of the pyrolytic chamber 11 with an opening in the downward direction in order to form a lateral heat retention space 11e.