Buried high-temperature-resistant shielding cable

The invention belongs to the technical field of shielding cables, and particularly relates to a buried high-temperature-resistant shielding cable which comprises a cable body and a connection seat, the cable body penetrates through the connection seat, a supporting seat is fixedly connected to the outer surface of the connection seat, and a shielding seat is fixedly connected to the interior of the supporting seat. A connection assembly is arranged on the side surface of the shielding seat, one side of the connection assembly is connected with a sealing assembly, the connection assembly comprises a poke rod rotationally connected with the side surface of the shielding seat, the outer surface of the poke rod is rotationally connected with a rotating rod, and one side of the rotating rod is connected with a push plate. When the rotating rod drives the push plate to move, the push plate can pull the telescopic rod and the extension spring on one side of the push plate at the same time, at the moment, the telesco