The present invention relates to a high-frequency therapeutic device for knee joints, which comprises: a first therapeutic device as a high-frequency therapeutic device including a first main body part having a hollow structure with the lower surface opened, a first protective cover connected to the inner surface of the first main body part, and a first vent hole formed on the upper part of the first main body part； a second therapeutic device as a high-frequency therapeutic device including a second main body part having a hollow structure with the lower surface opened, a second protective cover connected to the inner surface of the second main body part, a second vent hole formed on the upper part of the second main body part, and a cable connector, wherein the second therapeutic device is electrically connected to the first therapeutic device by a power control cable connected to the cable connector； a pair of low-frequency pads having silicone pad parts supplied respectively to both sides of the first and the second vent holes, low-frequency electrodes embedded in the silicone pad parts, and connecting protrusions respectively integrated into the low-frequency electrodes, wherein the connecting protrusions penetrate the protective covers respectively to be electrically connected to a low-frequency circuit part； and a controller controlling the first therapeutic device, the second therapeutic device, and the low-frequency pads, wherein detachable low-frequency pads which can apply high-frequency thermal therapy to skin core and improve blood circulation by far infrared rays according to selection of a user are added to allow the user to perform complex physical therapy.본 발명은 고주파 무릎 관절 치료기에 관한 것으로, 고주파 치료기로써 하부면이 개방된 중공구조의 제 1 몸체부와, 상기 제 1 몸체부의 내부면에 결합된 제 1 보호 커버와, 상기 제 1 몸체부의 상부에 제공된 제 1 통기구를 갖는 제 1 치료기와； 고주파 치료기로써 하부면이 개방된 중공구조의 제 2 몸체부와, 상기 제 2 몸체부의 내부면에 결합된 제 2 보호 커버와, 상기 제 2 몸체부의 상부에 제공된 제 2 통기구 및 케이블 접속구를 갖으며, 상기 접속구에 접속된 전원 제어케이블에 의해 상기 제 1 치료기와 전기적 연결되는 제
