The utility model relates to a radiographic inspection device is put to transmission line ground connection, specifically is transmission line ground connection radioactive ray intelligent detection device. The problem of it puts the radiographic inspection device to lack transmission line ground connection at present is solved. Including the spy dish, with spy dish mechanical connection's grab handle and with the electric controller of being connected of spy dish, a serial communication port, the controller comprises alternating magnetic field signal transmission module and the alternating magnetic field signal reception module of being connected with the spy dish, the alternating magnetic field signal reception module include consecutive high frequency oscillator, oscillation detector, audio frequency oscillator and power amplifier, wherein high frequency oscillator's input links to each other power amplifier's output connected indicating dial plate and sound indicator with the spy dish. The utility model discloses need not to carry out the concrete position that artifical excavation can detect secret radioactive ray, changed in the past the detection mode that the simplicity needs artifical excavation, showing and reducing artifical excavation cost, improve excavation efficiency, improve radioactive ray detection efficiency greatly.