A three dimensional wound dressing includes a foam body having a planar bottom surface and a convex arc-shaped top surface. The three dimensional wound dressing can be placed into a cavity wound in such a way that the top surface is abutted against an inner wall and a bottom of the cavity wound to effectively absorb wound exudate therefrom. Because the integrity of the foam body of the wound dressing can be maintained after the wound dressing absorbs the wound exudate, a user or a medical staff can conveniently remove and replace the wound dressing.
