Fixing sheet

Provided is a fixing sheet that can be stored in a packaging box without play in a state where the fixing sheet covers and fixedly holds an article. A rectangular flat plate-like lower surface sheet piece 2 continuously provided on the upper surface sheet piece 1 via a central fold line, and a plurality of flap pieces 3 continuously provided on the side edges of the upper surface sheet piece 1 and the lower surface sheet piece 2 via a side edge line extending in a direction orthogonal to the central fold line to form an adhesive sheet When the article 20 is stored in the packaging box 30 in a state of being held therebetween, And a flap piece 3 having an inverted V-shaped cross section raised by folding at the side edge fold line is pressed against the inner wall of the packaging box 30 by its elastic...