The electrode package for the electrolysis that embodiment relates to contains: have the electrode substrate of a plurality of perforating holes, at a plurality of the 1st concave parts of its surperficial open -ended, reach at another surperficial opening and a plurality of 2nd concave parts wide, small in quantity with the 1st concave part looks specific area, at least, partly the 1st concave part of intercommunication and the 2nd concave part of perforating hole, minimum opening at center of the opening that will be through each perforating hole is directly set for to W, and when setting for the minimum distance in the distance of the tip in the opening footpath of 1 perforating hole and the tip in the center of the opening's of perforating hole through bordering on minimum opening footpath for F, FW is 0.6~1.5, and F is 0.1~0.8mm.