The present invention relates to a monitoring device for a plasma discharge electrode condition of a hydroxyl group generating device, comprising: a hydroxyl group generation unit consisting of an electrode unit of a positive electrode and a negative electrode and generating a hydroxyl group an H-bridge circuit for supplying power, in which polarities of the positive electrode and the negative electrode are converted by switching a plurality of switching elements, to the hydroxyl group generation unit a switching unit for switching the switching elements of the H-bridge circuit a voltage detection unit for detecting a voltage applied to the hydroxyl group generation unit a current detection unit for detecting a current consumed in the hydroxyl group generation unit and a control unit for controlling the voltage applied through the switching unit by adjusting a pulse width modulation (PWM) duty, calculating detected voltage and current values to calculate power consumption, and controlling the voltage according to the calculated power consumption. The control unit is configured to compare the detected voltage and current values or PWM duty ratio with a threshold value to generate a clean signal indicating that the electrode unit is clean, or a cleaning signal or replacement signal indicating that cleaning or replacement of the electrode unit is required depending on a comparison result. By the hydroxyl group generating device of the present invention, it is possible to provide a cleaning time and a replacement time of an electrode by monitoring a state of contamination of an electrode of the hydroxyl group generating device and displaying the same to a user.본 발명은 수산기 발생장치의 플라즈마 방전 전극 상태 모니터링 장치에 관한 것으로, 양전극과 음전극의 전극부로 구성되어 수산기를 발생하는 수산기 발생부 다수 개의 스위칭 소자를 스위칭시켜 양극과 음극의 극성이 전환되는 전원을 상기 수산기 발생부에 공급하는 H브리지 회로 상기 H브리지 회로의 다수 개의 스위칭소자를 스위칭시키는 스위칭부 상기 수산기 발생부에 인가되는 전압을 검출하는 전압 검출부 상기 수산기 발생부에서 소비되는 전류를 검출하는 전류 검출부 및, PWM(Pulse Width Modulation) 듀티를 조절하여 상기 스위칭부를 통해 인가되는 전압을
