PROBLEM TO BE SOLVED: To improve flexibility of fastening tapes, while suppressing the deterioration of strength.SOLUTION: In a tape-type disposable diaper DP, the fastening tapes 13, 14 have a double structure constituted of an inner tape 13 and an outer tape 14 positioned on the outside of the inner tape 13. The inner tapes 13 include: inner tape attachment parts 13C fixed to both sides of a back side inner tape body parts 13B projecting from the inner tape attachment parts 13C and hook materials 13A exposed over upper and lower edges on the inner surfaces of the inner tape body parts 13B. The outer tapes 14 include: outer tape attachment parts 14C fixed to both sides of the back side and outer tape body parts 14B projecting from the outer tape attachment part 14C and having cover parts 14V that overlap at least the hook materials 13A of the inner tape body parts 13B and protrude outward from the upper and lower edges of the hook materials 13A.