The utility model discloses an underground pipeline intermediate relaying room device. Relating to the field of pipeline engineering, the hinge comprises a front hinge part and a rear hinge part, thefront hinge part comprises a front hinge body, an anti-deflection groove, a first flange and a first stiffening plate; the rear hinge part comprises a rear hinge body, an anti-deflection tongue, a second flange, a second stiffening plate and an oil cylinder; the anti-deflection groove is formed in the front hinging body; the anti-deflection tongue is arranged on the rear hinging body; the anti-deflection tongue can be inserted into the anti-deflection groove; the bottom end of the oil cylinder is arranged on the second flange; the top end is contacted with the first flange; the short edge of the first stiffening plate is arranged on the first flange; the long edge is arranged on the inner wall of the front hinging body; the short edge of the second stiffening plate is arranged on the second flange, the long edge of the second stiffening plate is arranged on the inner wall of the rear hinged body, identical and symmetrical notches are formed in the upper portions and the lower portionsof the first flange and the second flange, the multiple oil cylinders are arranged on the two sides of the notches of the first flange and the second flange, and space is reserved for an electric vehicle to run in the device.