The lining and assembling machine with pressurized sealed oil tank belongs to tunnel engineering constructing machinery. The connecting mode includes setting the cantilever beam and the oil tank cantilever beam in the same side of the disk, driving the disk with the rotating driver, setting the electric control assembly on the top of the oil tank steel structure, setting the hydraulic pump set on the top of the oil tank cantilever beam, setting the pressurized sealed oil tank inside the steel structure of the oil tank steel structure, welding the guide barrel on one side of the cantilever beam, fixing the elevating oil cylinder onto the outside of the guide barrel, setting the elevating beam below the elevating oil cylinder, screwing the translating mechanism in the lower part of the elevating beam, setting the translating oil cylinder in the middle of the translating mechanism, and setting two pipe wrench beside the translating oil cylinder. The present invention has simple structure and high construction speed.