PROBLEM TO BE SOLVED: To provide a disposable diaper with a connection means which prevents release of engagement between a front body part and a rear body part by force from the thighs accompanied with walking and sitting of a wearer.SOLUTION: Support members 41 are provided to inner faces on both side parts of any one of the front body part F and the rear body part B of an exterior sheet 20 and inner faces on both side parts of the other body part facing the body part. Third engagement parts 46 are provided to inner faces of upper side parts of the support members 41 and second engagement parts 45 are attached to outer faces of lower side parts. Thus the inner faces on both side parts of the body part are engaged with the second engagement parts 45 and the outer faces of the body part are engaged and connected with the third engagement parts 46.
