PROBLEM TO BE SOLVED: To provide a male diaper which can be easily worn on a suitable site and is excellent in economic efficiency.SOLUTION: The male diaper includes a wearing part with a hole part 51 for projecting the penis outside and a bag part 70 for retaining urine, and can be freely detachably attached to the wearing part in such a manner that the bag part 70 wraps the penis projected outside from the hole part 51. The hole part 51 is formed of a linear slit and is equipped with a slit blocking member 80 having an expansion/contraction part 81 expandable/contractible in a direction crossing the slit and a pair of attaching/detaching parts 82L, 82R integral with the expansion/contraction part 81 and detachably attachable respectively to wearing part surfaces (6L, 6R) on both sides of the slit.
