Sealed medical electrode package

A sealed type medical electrode package has the 1st electrode and the 2nd electrode equipped with the electric conduction layer (14) arranged on one main side of the backing sheet (10) of non-conductivity by flexibility. These electrodes are arranged so that those electric conduction layers (14) may counter mutually, and those backing sheets are 封止 (ed) around the peripheral end so that separation is possible, and they form the enclosure of gas impermeableness substantially in which these backing sheet accommodates an electric conduction layer. In another case of the operation shown in Fig. 6, each electric contact is pierced and prolonged, and electrically connects each backing sheet with each electric conduction layer, and the packaging material of gas impermeableness encloses an electrode substantially. This packaging material has each opening to which each electric contact is exposed, and the periphery of each opening is 封止 (ed) around each electric contact to the backing sheet.