<;P>;PROBLEM TO BE SOLVED: To provide a bag for sterilization capable of visually checking articles stored therein and that the articles are sterilized at a glance, and taking into consideration the environmental problem. <;P>;SOLUTION: The bag for sterilization consists of one sheet of a synthetic resin-made sheet made by laminating a base layer and a heat adhesive resin layer, and the other sheet of a gas-permeable sheet. A heat adhesive resin layer side of the synthetic resin-made sheet is superposed on the permeable sheet, and their peripheral is heat-stuck to form a peripheral heat-bonded part. An indicator ink layer is formed between the base layer and the heat adhesive resin layer of the synthetic resin-made sheet, and the heat adhesive resin layer is formed of a bio-degradable resin mainly consisting of an aliphatic polyester resin. <;P>;COPYRIGHT: (C)2010,JPO&INPIT