PROBLEM TO BE SOLVED: To suppress peeling sound of a hook sheet when detaching a fastening tape.SOLUTION: In a tape type disposable diaper, the fastening tape 13 is formed by fixing the hook sheet 14 by an adhesive layer 14b to a main sheet 15 attached to a back side part B in a peelable manner. The main sheet 15 includes an extension part 15E extended from a root part 15F, and a non-fixed main picking margin 15T provided to the tip end of the extension part 15E, and a sub sheet 16 is fixed by the adhesive layer 14b from the main picking margin 15T to the base end side at the extension part 15E in a peelable manner. The hook sheet 14 is fixed to the inner surface more on the proximal end side than the main picking margin 15T on the sub sheet 16, and a part more on the tip end side than the hook sheet 14 on the sub sheet 16 is formed as a non-fixed sub picking margin 16T which can be piled up with the main picking margin 15T and picked.
