The utility model belongs to the technical field of high-temperature thermotechnical equipment and material preparation, and discloses an electric auxiliary high-temperature thermotechnical device which comprises a closed cavity defined by a furnace door and a furnace body. A temperature measuring device is arranged on the furnace body and is used for measuring the temperature of a sample and multiple areas in the furnace in a high-temperature process; an observation window is installed on the furnace door and used for observing the state in the furnace in the high-temperature process; a program control motor is installed on the furnace body and used for driving electrodes in the furnace to move. The high-temperature thermal device provided by the utility model is novel in structure, and can be used for monitoring the conditions in the furnace and the temperatures of multiple areas in real time and intervening the positions of the electrodes in real time in high-temperature work such as ultra-fast sintering, reaction, connection, smelting and the like.