The present invention relates to a microwave seating heat treating device which comprises: a power supply unit which supplies the predetermined input power source to a seating heat treating device； a malfunction detection controlling unit which automatically blocks the overheating of high frequency generating device and abnormal overheating of the seating heat treading device； a high voltage controlling unit which controls the status to maintain the voltage while generating a high frequency and enabling the irradiation of the predetermined microwave； a high frequency trans unit which comprises a high voltage transformer (HVT), supplies a high voltage trans filament voltage by generating a voltage of the power source which is supplied from the power supply unit to high voltage of 220V； a high frequency generating unit which outputs microwave from the microwave generating member by generating 2450MHz of microwave by amplifying the outputted high frequency from the high frequency trans unit； a controlling unit which provides the 2450MHz of high frequency which is outputted by controlling the high frequency generating unit by adjusting the intensity from 1-5 stage； a cooling fan which cools the temperature of the high frequency generating unit； a controller unit which comprises the controlling unit, and controls the power supply status of the seating heat treating device, and output time of the high frequency. [Reference numerals] (110) Power supply unit； (120) Earth leakage circuit breaker unit； (130) High voltage controlling unit； (140) High frequency trans unit； (150) High frequency generating unit； (152) Low voltage supplying unit； (154) Diode； (160) Operation unit； (170) Fan motor； (180) Controlling unit； (210) Temperature sensor for detecting； (220) Waveguide본 발명은 마이크로파 온열 좌열기본 발명은 온열 좌열기에 소정의 입력전원을 제공하는 전원 공급부； 상기 온열 좌열기의 이상과열 및 고주파 발생장치의 과열을 검출하여 자동차단하는 이상 검출제어부； 고주파 발생시 전압을 일정하게 유지시켜주며, 소정의 마이크로파의 방사가 이루어지도록 제어하는 고전압 제어부； 상기 전원 공급부로부터 공급되는 전원의 전압을 220V의 고전압으로
