Tumor patients is an extremely invasive for patients with malignancies in particular, likely to be expressed warmth, burns, pain, adverse events such as severe side effects in any race is extremely low, normal cells it is possible to prevent minimizing damage to bring the natural death of tumor cells in the growth phase of malignant tumor tissues such as tumor foci and tumor cells deeper than the skin not only the skin, high therapeutic effect and a safe and provides a simple tumor therapy device can show. The absorption wavelengths 1400~1500nm of the outgoing light beams from the near-infrared emission source 15, a filter 16a for transmitting the near infrared and by scattered or reflected, a tumor therapy device 1, the near infrared and the near-infrared emitting sources 15 en route to the tumor tissue of the living body 3 at 2 is illuminated, and are arranged.腫瘍患者、特に悪性腫瘍患者に対し極めて低侵襲であり、如何なる人種であっても熱感、火傷、疼痛、重篤な副作用のような有害事象を発現させる可能性が極めて低く、正常細胞の損傷を最小限に防ぎ、皮膚のみならず皮膚よりも深部の腫瘍細胞や腫瘍病巣のような悪性腫瘍組織の増殖期にある腫瘍細胞を自然死に至らせることができ、安全であって高い治療効果を示すことができる簡易な腫瘍治療装置を提供する。腫瘍治療装置1は、近赤外線出射源15からの出射光線の内の1400~1500nmの波長を吸収、反射又は散乱させて近赤外線を透過させるフィルタ16aが、前記近赤外線出射源15と前記近赤外線で照射される生体2の腫瘍組織3との経路途中に、配置されている。
