Problem to be solved: to provide a magnetic irradiation apparatus used for physical therapy of a malignant tumor which is gentle and inexpensive and effective in living body.Solution: the magnets 1 and 2 are rotated by the magnetic force of the magnets 1 and 2, or the magnets 1 and 2 do not move, and the body 5 is rotated, and the potassium cation in the malignant tumor cell is leaked out of the cell, and the malignant tumor cell is strongly inclined to acid, thereby killing the malignant tumor cell.Diagram【課題】生体に優しく安価で効果のある悪性腫瘍の理学治療方法に用いる磁気照射装置を提供する。【解決手段】被射体である生体5に回転する磁石1,2による磁力により、又は磁石1,2の方は動かず生体5の方を回転させ、悪性腫瘍細胞内のカリウム陽イオンを細胞外に漏洩させ、悪性腫瘍細胞内を強く酸性に傾かせることにより悪性腫瘍細胞を死滅さす。【選択図】図1