The present invention organisms, for example, human muscle stiffness and pain, cuts, diabetes, tumors, etc. quickly and safely healing can be reduced in size, to provide a low-cost easy handling in a cavity radiation quantum therapy device to. the power supply unit 1 which generates a negative fluctuation potential with respect to the A serving as a reference ground potential, bed support cradle 7 and half-body cross-sectional shape is semi-circular shape or polygonal shape covering the upper part and a treatment unit body consisting of a half cylinder quantum generator 2 which is arranged far infrared radiation plate on the inner surface of the metal electrode plate 9 and a semi-cylindrical die metal electrode plates and the power supply via a lead wire 3 Connecting.BACKGROUND 2【課題】生物、例えば人間の筋肉の凝りや痛み、切り傷、糖尿病、腫瘍等を迅速に且つ安全に治癒できる小型、安価で取り扱いの容易な空洞輻射型量子治療器を提供する。【解決手段】基準となる大地電位に対して負の変動電位を発生する電源装置1と、ベッド支持架台7及びその上部を覆う断面形状が半円形状又は多角形状の半胴型金属製電極板9の内側面に遠赤外線放射板を配置した半胴型量子発生器2から成る治療器本体とを備え、半胴型金属製電極板と電源装置とをリード線3を介して接続する。【選択図】図2