The present invention generates a high potential to generate a positive potential on a current-carrying probe, brings the current-carrying probe into contact with a part of a human body having pain such as arthritis, induces a discharge phenomenon in the human body by a potential difference caused by the above- To an apparatus for treating arthritis and pain using an electrostatic force which heals inflammation or pain by activating damaged cells causing inflammation or pain while increasing blood flow velocity of capillary vessels, A power switch; A power supply unit for converting the AC power inputted through the power switch into a predetermined DC power and supplying the AC power; A synchronous ring oscillator for generating and outputting a synchronous static sinusoidal oscillation signal controlled by an AC commercial power source supplied to the primary side of the high voltage transformer through the power switch; A relay unit for supplying or disconnecting the AC power outputted through the synchronous incidence wave oscillation unit; A high voltage transformer for generating and outputting a high voltage to the secondary side; An energizing current detector connected to a secondary side output terminal of the high-voltage transformer to detect an amount of energizing current of the energizing probe; An energizing probe connected to the energizing current detector for generating a constant electric potential induced by the high-voltage transformer; The control unit controls the output of the high-voltage transformer to the set value by controlling the synchronous horn resonance unit, generates or stops the output of the high-voltage transformer by controlling the relay unit, detects the input value of the energization current detection unit, And a controller for converting the amount of current flowing through the pain part of the human body into a numerical value for display.본 발명은 설정된 고압을 발생시켜 통전프로브에 정전위를 생성하고, 상기 통전프로브를 관절염 등 통증이 있는 인체부위에 접촉시켜, 상기 정전위에 따