The invention provides an absorbent article that is small and that can be easily worn by a user and a method for producing the absorbent article.The absorbent article that is used in abutment against a user's body includes: an absorbent body for absorbing fluid; and an absorbent-article main body whose face on a side close to the user's body in use is joined to the absorbent body. The absorbent body has a longitudinal direction, a width direction, and a thickness direction. One end section of the absorbent body in the longitudinal direction is undetachably joined to the absorbent-article main body, and another end section of the absorbent body in the longitudinal direction is detachably joined to a portion inside an outer edge of the absorbent-article main body. The absorbent body has a non-joined section that is not joined to the absorbent-article main body, between the joined section on a side close to the other end section and the outer edge of the absorbent-article main body.