The furnace is made up of high frequency transormer, inductor, controller, compound ceramic-material heating element, hith-pressure shell, temperature testing system, optical-fiber infrared thermodetector cooling system, air-pressing furnace door system anddata-processing software etc. its working pressure is 3-10MPa, max temperature is 2200°C. its working conditions is oxidizing atmosphere, oxygen,nitrogen or inert gases. temperature testing thermodetector is infrared thermodetector. air- pressing door system used is easy to operate safely. the furnace has two sets of alarming systems, that is safe alarming system and over-temperature alarming system with the protective furnction of water-break, electrical outage, open-phase and broken wire protection. the device has RS-485 communicating port, data managing software, regulating processing switch of brightness temperature and true temperature, recorder without paper recording the previous data and curve of temperature rise, regulatin