The invention discloses an underground pipeline installation construction device and a method thereof. The device is characterized in that baffles are arranged at both sides and at the front end of a box; openings are arranged at the rear end and at the upper part of the box; baffles are arranged on the position which is at the bottom end of the box and is 1 / 2 away from the front end of the box; a
hydraulic cylinder is connected with the front end of the box and the other end of the
hydraulic cylinder is connected with a thrust stand; one end of a pulling
rope is connected in front of the box and the other end thereof is connected with a pulling facility. The method is as follows: a hole is dug on the starting point of an
underground pipeline, in which the box is arranged; paddings are backfilled from the upper part to the bottom of the box, the pipeline is hoisted into the box by hoisting equipment from the upper part of the box and is positioned on
bedding, and then stones are filled; holes at the front end of the box are dug and pulling equipment is started to move; a
bedding layer is filled from the upper part of the box, a secondary pipeline is hoisted, the
hydraulic cylinder is started after the secondary pipeline is in place, the pipeline and the secondary pipeline are jointed by a socket, stones are backfilled in the secondary pipeline from the upper part of the box after socket joint and the box is pulled to move; construction installation of a nth pipeline is carried out by
cycling the above steps. In the invention, box operation is adopted for stepping pipeline installation, thus ensuring simple working procedures, few links and low cost, greatly increasing the efficiency of
underground pipeline installation construction and laying a foundation for realizing full
automation of underground pipeline installation construction.