When activating the normalizing mechanism of the organism by application of heat and a weak electric current, this energizing and heating system of a pad for an electric thermal therapy device appropriately controls energizing to efficiently apply heat, etc., to the organism, making it possible to achieve said activation quickly. A heater unit provided on a pad is structured as a combination of a resistance unit which generates heat when energized and a first heater electrode group and second heater electrode group, which comprise multiple heater electrodes arranged side by side. For one resistance unit, multiple heater electrodes are arranged side by side, and an energizing control unit selects pairs of heater electrodes to be set to an energized state and energizes these with the resistance unit interposed therebetween. The energized heater electrodes are sequentially switched, causing heat to be generated sequentially at heat generation positions corresponding to the multiple combinations of pairs of heater electrodes, thereby repeating a state in which heat is generated little by little in each area of the resistance unit, raising the temperature over a wide area of the resistance unit and enabling heating the entire resistance unit in a short time and efficiently applying heat to the organism.La présente invention concerne un système de mise sous tension et de chauffage d'un coussinet destiné à un dispositif de thérapie thermique électrique qui, lors de l'activation du mécanisme de normalisation de l'organisme par application de chaleur et d'un courant électrique faible, commande correctement la mise sous tension de façon à appliquer efficacement la chaleur, etc., à l'organisme, ce qui permet de réaliser rapidement ladite activation. Une unité de chauffage disposée sur un coussinet est structurée sous la forme d'une combinaison d'une unité de résistance qui génère de la chaleur quand elle est mise sous tension et d'un premier groupe d'électrodes de chauffage et