Until recently, it designates that the controversial issue of the thermal remedy for the cancer of technology is solved as purpose, holds down the advance of the cancer, it offers the cell activated device which can contribute to the disappearance of the cancer cell. Cell activated device 100 of this invention cuts the infrared ray of bigger wavelength, than 7.5 millimicrons operation vis-a-vis the affected part where the cancer cell is included, as a heat wave the cell originally activating the gene restoration feature which it has by lighting obtaining the infrared ray of wavelength of 7.5 millimicrons or less, supports the cancer treatment. The infrared ray lighting medical therapy which uses the wavelength of 7.5 millimicrons or less, is the loose medical therapy which recalls the function which the cell of the original human body that it has it activates gene restoration feature, and it makes the type which if irradiates the infrared ray with the non-contact of the patient, while leading daily life, taking degree of freedom of the body without, it is possible to make the cell activate.従来技術の癌に対する温熱治療の問題点を解決することを目的とし、癌の進行を抑え、癌細胞の消滅に資することができる細胞活性化装置を提供する。本発明の細胞活性化装置100は、癌細胞を含む患部に対して、熱線として作用する7.5μmより大きな波長の赤外線をカットし、7.5μm以下の波長の赤外線を照射せしめることにより、細胞が本来備えている遺伝子修復機構を活性化して癌治療を支援する。7.5μm以下の波長を用いた赤外線照射療法は、遺伝子修復機構を活性化するという本来の人体の細胞が持つ機能を呼び起こす緩やかな療法であり、患者の非接触で赤外線を照射するタイプとすれば、身体の自由度を奪うこともなく、日常生活を送りながら細胞を活性化させることができる。