PROBLEM TO BE SOLVED: To provide an easy-to-wear absorbent article not easily shifted even when it becomes heavy while being worn and not easily causing skin troubles, at a low cost.SOLUTION: In a paper diaper 1 including a body part 10 having an abdominal side part 11 to be positioned on the abdominal side of a human body and a back side part 12 to be positioned on the back side, a pair of left and right tape parts 20, 20 projecting from both side end parts in the width direction (X direction) of the back side part 11, and a target part 30 provided on the outer surface of the abdominal side part 11 and capable of freely detachably locking the tape parts 20, 20, the abdominal side part 11 and the back side part 12 include an abdominal side flap 40 and a back side flap 50 which project from the end parts in the longitudinal direction (Y direction) of the body part 10, and include locking parts (fastening tapes 41, 51) capable of being locked to clothes on the outer surface.
