The utility model relates to an oral cavity isolator, which comprises a connecting pipe, a occluding pad and a light transmitting soft isolating piece.Connect the tube wall of the tube and the inner cavity surrounded by the tube wall.The occluding pad is connected with the outer surface of the pipe wall.The spacer connects one end of the connecting tube.One side of the isolating piece is provided with a spitting groove, one end of the spitting groove is communicated with the inner cavity, and a convex block is arranged on the inner wall of the spitting groove.The upper and lower surfaces of the isolation piece are respectively provided with a drain hole communicated with the drain groove, and the upper surface of the isolation piece is also provided with an approach channel, and one end of each approach channel is connected with the corresponding drain hole.The utility model relates to an oral cavity isolation spitting lighting device, which comprises an oral cavity isolator and a spitting lighting device.A light source, a light guide and a spitting structure are arranged in the spitting illumination device.When one end of the suction lighting device is connected with the inner cavity of the connecting tube, the light guide part transmits the light of the light source to the isolating piece, and the suction structure is connected with the discharge slot of the isolating piece.一種口腔隔離器，包括連接管、咬合墊及透光軟性隔離片。連接管具管壁及由管壁包圍形成的內腔。咬合墊連接管壁外表面。隔離片連接連接管一端。隔離片一側設有排唾槽，排唾槽一端與內腔連通，排唾槽內側壁上設有凸塊。隔離片上、下表面各設有與排唾槽連通的排唾孔，隔離片上表面還設有引道，各引道一端連接對應的排唾孔。一種口腔隔離吸唾照明設備，包括前述口腔隔離器及吸唾照明裝置。吸唾照明裝置內設有光源、導光件及吸唾結構。吸唾照明裝置一端連接連接管內腔時，導光件將光源光線傳導到隔離片，吸唾結構與隔離片排唾槽連通。
