The present invention allows a further increase in a treatment effect of a medical sheet material which is used in treatment of a living body, for example, muscle stiffness or pain, cuts, etc., of a human being. A medical sheet material working method according to the present invention uses: a power source device formed from an AC power source which is grounded at one output terminal, and an LC parallel circuit which is connected in series to the other non-ground side output terminal of the AC power source, said power source device outputting a superpositioned wave (vo) of an output voltage (v) of the AC power source and an induced electromotive force (v) which is induced in the LC parallel circuit by an external electromagnetic wave with the other terminal of the LC parallel circuit as an output terminal and a conductive electrode plate connected via a lead wire to the output terminal of the power source device and comprising a far-infrared radiator layer. A medical sheet material is positioned upon the upper part of the far-infrared radiator layer of the conductive electrode plate, either directly or with a gap therebetween. A fluctuating electrical field is generated in the conductive electrode plate by outputting the superpositioned wave (vo) from the output terminal of the power source device to the conductive electrode plate, the medical sheet material overall is located within the fluctuating electrical field, and the medical sheet material overall is activated.La présente invention permet daccroître davantage un effet de traitement dun matériau de feuille médicale qui est utilisée pour le traitement dun corps vivant, par exemple, une raideur ou douleur musculaire, des coupures, etc., dun dêtre humain. Un procédé de façonnage de matériau de feuille médicale selon la présente invention utilise : un dispositif de source dénergie comprenant une source dénergie à courant alternatif, qui est mise à la terre au niveau dune borne de sortie, et un circuit parallèle L
