Road pipeline non-excavation laying construction device and construction method thereof

The invention relates to the technical field of buildings, and discloses a road pipeline non-excavation laying construction device which comprises a horizontal directional drilling machine body, an expanding drill, a slurry discharging box and a clamping structure. The expanding drill and the punching drill bit are alternately and detachably connected to the other end of the punching drill rod; the slurry discharging box is movably connected with the end, away from the punching drill rod, of the expanding drill. The clamping structure is of an annular structure and is arranged on the side face, away from the expanding drill, of the slurry discharging box. In the invention, the construction pipeline can be laid underground more stably and compactly, the condition of pavement settlement caused by gaps is effectively avoided, the laying effect of the construction pipeline is enhanced, the laying construction of the construction pipeline is safer and more reliable, the influence on road traffic is reduced, the sa