Pipeline leakage detection plug

The utility model discloses a pipeline leakage detection plug, and particularly relates to the technical field of pipeline leakage prevention, the pipeline leakage detection plug comprises an extrusion block, the cross section of the extrusion block is T-shaped, and the outer wall of the extrusion block is fixedly connected with a fixing mechanism; the fixing mechanism comprises a connecting ring, the connecting ring is fixedly connected with the outer wall of the extrusion block, two fixing plates are hinged to one side of the connecting ring, the cross section of each fixing plate is in an arc shape, rubber pads are fixedly connected to the inner walls of the fixing plates, two first sliding grooves are formed in the outer walls of the fixing plates, and soft racks are movably connected into the first sliding grooves. The top of the first sliding groove is fixedly connected with a fixing shell, and a groove is formed in the bottom of the first sliding groove. The plug is simple in structural design and conv