PROBLEM TO BE SOLVED: To easily loosen a housed gauze ball to take out a gauze.SOLUTION: Square gauze is accordion-folded to be formed into the gauze ball 11 and housed in each of gauze housing recessed parts 4, and the end piece 13c of the corner part C of the gauze is made to project from a gauze pull-out hole 5. When using the gauze, the end piece 13c is clamped with tweezers P and pulled out. Owing to the accordion-folded gauze ball 11, the gauze is easily loosened when pulled out from the gauze pull-out hole 5, and is restored to the shape to be easily used in a surgery.