The present disclosure relates to an intraoral suctioning device for intraoral negative pressure wound treatment and a method for manufacturing the same. In order to permanently maintain the negative pressure in a wound with a view to an improved wound treatment and regeneration process, the intraoral suctioning device for the intraoral negative pressure wound treatment as disclosed can include a dental splint, an elastic membrane sealing an aperture formed in the dental splint so as to define a sealed wound treatment area on the inside of the dental splint, and a suctioning channel system for evacuating the wound treatment area.