Detector for underground pipeline

The utility model discloses a detector for an underground pipeline. Including a detection device, an adjusting rod is fixedly mounted in the middle of the outer surface of the lower end of the detection device; a mounting base is arranged below the detection device; the adjusting rod is sleeved with the mounting base; a sliding rod is fixedly connected to the outer surface of one side of the mounting base; a fixed groove plate is fixedly mounted on the outer surface of the other side of the mounting base; supporting rods are fixedly mounted at the positions, close to the two side edges, of theouter surface of the lower end of the mounting base. A graphic processing device is fixedly installed at the position, close to the upper end, of the outer surface of one side of the detection device, a limiting groove is formed in the outer surface of the upper end of the installation base, and a guide mechanism is fixedly installed between the bottom end of the inner surface of the limiting groove and the outer surface