Buried cable searching device and method

The invention provides a buried cable searching device, which comprises an inverted U-shaped moving frame, a shielding cylinder, a rotating motor, a searching mechanism and a paint spraying marking mechanism, and is characterized in that the searching mechanism comprises a rotating plate, a main control unit, a first transceiver for receiving and transmitting high-frequency electromagnetic waves, and a second transceiver and a third transceiver for receiving and transmitting low-frequency electromagnetic waves; the inverted-U-shaped moving frame is moved to a to-be-searched area, the initial position of the cable is obtained through the first transceiver, then the rotating plate is driven by the rotating motor to rotate, the second transceiver and the third transceiver are located above the buried cable at the same time, the main control unit controls the inverted-U-shaped moving frame to move in the connecting line direction of the second transceiver and the third transceiver, the second transceiver serves a