A negative pressure wound dressing including an enclosure housing and a wound contact layer is provided. The enclosure housing has an opening, the opening of the enclosure housing has a barrier layer therein to separate the enclosure housing into an exudate receptacle and a contact layer receptacle. The wound contact layer is contained in the contact layer receptacle. The exudate receptacle of the enclosure housing includes a negative pressure deliver tube connecting the exudate receptacle and a negative pressure source, and a discharging tube disposed in a vicinity of the harrier layer for discharging exudates stored in the exudate receptacle. The barrier layer includes at least one conduit with openings respectively toward the exudate receptacle and the wound contact layer for draining wound exudates from the wound contact layer to the exudate receptacle when a negative pressure is delivered from the pressure source via the negative pressure delivery tube.
