The present invention relates to a high-frequency therapeutic apparatus for performing treatment using deep heat by applying a high-frequency wave to a human body, more particularly, to a portable high-frequency therapeutic apparatus for preventing damage to an electrode for reducing weight by reducing an amount of material of an electrode making contact with a human skin to apply a high-frequency power, preventing the electrode, which has become weaker due to the reduced weight, from being damaged b external impact, and improving water resistance by sealing a coupling gap of the electrode. The portable high-frequency therapeutic apparatus for preventing damage to an electrode according to the present invention includes: a drive module having a high-frequency power source to generate a high-frequency power； an applying electrode and a conductive electrode to apply and transfer the high-frequency power supplied from the drive module onto a skin making contact with the applying electrode and the conductive electrode； and a housing having an upper case and a lower case, which are assembled and coupled to each other, to accommodate the drive module, and a head coupled to a front of the assembled upper case and lower case and including a through hole, through which the applying electrode and the conductive electrode is inserted, wherein each of the applying electrode and the conductive electrode includes a convex part exposed though the through hole of the head, a concave part formed inside the convex part, and a supporting block embedded in the head and having multiple supporting parts inserted into the applying electrode and the conductive electrode to support the applying electrode and the conductive electrode thereby preventing the applying electrode and the conductive electrode from damage.본 발명은 고주파를 인체에 인가하여 심부발열을 통해 치료하는 고주파 치료기에 관한 것으로서, 보다 상세하게는 인체 피부에 접촉되어 고주파 전원을 인가하는 도자의 자재절감을 통한 경량화를 구현하고, 경량화에 따라 강도가 약해진 도자가 외부충격에 의해 손상되는 것을 방지할 수 있고, 도자의 결합 틈새를 밀폐하여 방수성을 강
