The utility model provides a clinic treatment odontogenic non -infectious disease (like adamantinoma, keratocyst etc. ) and odontogenic infectious?diseases's (like pulpitis, periapical periodontitis, periapical abscess, periapical cyst etc. ) the negative pressure odontogenic 0 who attaches to tooth hard tissue, including closure part, negative pressure machines, burden pressure measurer, liquor recovery ware, medicine placer, this tooth body negative pressure drainage device made by medical macromolecular material and metal material, and small in size, there is not obvious foreign body sensation, can be fixed in tooth hard tissue with closure part, pass through negative pressure machines, burden pressure measurer, the negative pressure control valve, keep local negative?pressure, the tissue that the normal pressure leads to reduces owing to absorbing, symptoms such as pain, the osteogenesis that the improvement was produced by the negative pressure, simultaneously to dental pulp cavity, the periapex position ooze out liquid drainage suction, avoid oral microflora secondary pollution, reduce and infect the chance, greatly shorten the therapeutical cycle, especially obturator and closing cap are connected with the draw -in groove through the buckle, can open closing cap treating or changing dressings in carrying out tooth body according to the needs of the state of an illness at the treatment in -process, can reform the negative pressure after combining with the closing cap, the clinical efficacy and the efficiency of the relevant disease treatment of odontogenic have greatly been improved.