To prevent shoes from growing mold, from being covered with dust, and from being scratched by striking at other shoes by providing in a bag of such a quality as to be capable of keeping airtight and capable of being shaped to the contour of shoes and that of the inside of the foot hole a shoe- insertion hole and a suction hole for bleeding air from inside.

Into a shoe-keeping bag 5, which is capable of keeping airtight in quality and is to be shaped to fit the external contour of a shoe and the inside of the foot hole, a shoe is inserted through a shoe-insertion hole 3 and, after a bag-shaped part fitting the inside of the foot hole has been put inside the shoe through its foot hole 2, the shoe-insertion hole 3 is closed. Next by drawing off the air through a suction hole 4 and closing it the shoe-keeping bag 5 is vaccumized. To secure airtightness in order not to let air into the shoe-keeping bag 5 a valve, fastener, clip, adhesive tape or the like is preliminarily attached to the suction hole 4 and the shoe-insertion hole 3. This constitution produces a vacuum inside the shoe-keeping bag 5 and enables the shoe to be wrapped in a material which keeps airtight from both the outside and inside of the shoe.