Assembled square underground pipe gallery

The utility model relates to an assembled square underground pipe gallery which is simple in structure and convenient to assemble and transport. The assembled square underground pipe gallery comprises a plurality of pipe sections sequentially connected, wherein the pipe section comprises an upper cover plate, a lower cover plate and a plurality of connecting vertical plates, and a plurality of longitudinal bosses corresponding one to one are respectively arranged on the opposite surfaces of the upper cover plate and the lower cover plate; the connecting vertical plate is vertically connected between the longitudinal bosses of the upper cover plate and the lower cover plate, and a plurality of positioning pins are uniformly distributed in the middle of the longitudinal bosses; first connecting angle steel and second connecting angle steel are respectively arranged at the two sides of the longitudinal bosses, and the positioning pins extend out of the surfaces of the longitudinal bosses; a plurality of positioning sleeves are uniformly arranged in the middle of the top and bottom surfaces of the connecting vertical plates, and third connecting angle steel and fourth connecting angle steel are respectively arranged at the two sides of the connecting vertical plates; the positioning pins are correspondingly arranged in the positioning sleeves one to one, and the first connecting angle steel is connected with the third connecting angle steel; the second connecting angle steel is connected with the fourth connecting angle steel. According to the assembled square underground pipe gallery provided by the utility model, the construction difficulty and cost are reduced.