The invention proposes a xenon-filled hermetic connection device. The xenon-filled hermetic connection device comprises a sealing bottom plate, a cross beam, a rotation support shaft, a first thread connection rod, a sealing cover plate, a first matching support shaft and a second matching support shaft, wherein a support lug is arranged at each of two sides of the sealing bottom plate, the rotation support shaft is arranged on one of the support lugs, the first matching support shaft is arranged on the other support lug of the sealing bottom plate, and the rotation support shaft can rotate around a central line of the rotation support shaft. In the xenon-filled hermetic connection device, the sealing cover plate can rotate to other positions from a position right above the sealing bottom plate through rotation of the rotation support shaft, so that no obstacle is generated right above the sealing bottom plate, and a lamp needed to be filled with air can be conveniently placed in the sealing bottom plate; and a second cover plate and the sealing bottom plate are matched in an equal-diameter manner, the tightness is very high by squeezing a sealing ring, and moreover, only the sealing ring is usually damaged and is needed to be replaced. The device has long service lifetime, and is simple to maintain and convenient to operate.