Abstract: A packing mat has an outer layer sheet, an inner layer sheet, and beads. The outer layer sheet and the inner layer sheet are layered vertically and the peripheral edges are hermetically sealed. The beads are granular synthetic resin foamed bodies, and a large number of beads are filled between the outer layer sheet and the inner layer sheet. The outer layer sheet and the inner layer sheet become the mat having a fixed thickness by filling a layer of beads evenly. A check valve blocking a discharge of air during deaeration is attached to a surface of the outer layer sheet. The surface of the inner layer sheet is a surface to wrap the articles, and by folding the mat, the mat contacts with the articles from three directions, and by deaeration, the mat contracts and solidifies to support each article at three surfaces and hold at fixed positions.