Disclosed is a disassemblable oven roaster. The disassemblable oven roaster comprises a geared motor having a main shaft to a free end of which a fan is mounted and a reduction shaft to a free end of which a roasting spit is connected; a motor housing for accommodating the geared motor; an intermediate supporting member detachably and horizontally coupled to the motor housing for supporting a roasting heater and the roasting spit which are disposed therein in a manner such that they are spaced apart from each other by a predetermined distance, the intermediate supporting member having opened upper and lower ends; and upper and lower oven elements covering the opened upper and lower ends, respectively, of the intermediate supporting member, the upper and lower oven elements being configured so that they can be separated from the intermediate supporting member.