To provide a cap seal with a non-contact IC tag.

In the cap seal 1 which is put on a container with a bung hole for a content on the top face and a bung hole part of a barrel for beer and a foamable liquor so as to cover it, and is composed of a top face sheet 11 and a side face resin shrink film 12, antenna patterns 21 and 22 comprising an electrically conductive ink are printed on the top face sheet, and the non-contact IC tag label 3 is stuck on the antenna pattern printed part. The antenna patterns 21 and 22 comprising the electrically conductive ink are printed on the inner face side or the outer face side of the top face sheet 11, and the non-contact IC tag label 3 can be stuck in such a way that it is brought into contact with the antenna patterns or it becomes to a corresponding positional relation.