The utility model discloses a tunnel transition electromagnetism antenna device for forward probe, including antenna element and gyration support, antenna element includes the the central axis coincidence and forms emit antenna and the receiving antenna who overlaps the loop line and set up, and the gyration support includes the support frame of vertical setting and cooperate the connecting rod of setting with support frame tilting's relatively mode and support frame, and antenna element connects in the connecting rod with the mode of connecting rod horizontal hunting relatively, when the detection was used, emit antenna and receiving antenna can reach the detection of geology information all around according to different angles to tunnel the place ahead in step, even 3D data volume can be constituteed to the data that must gather, the leading diversified three -dimensional imaging in side realizes providing essential data for further tunnel, the advanced prediction achievement that adopts this fixed point gyration antenna to survey can realize pinpointing the spatial position of moisture anomalous body, and then can make pointed references and lay leading spy, draining drilling hole, has both practiced thrift the probing cost, has improved the tunnelling work efficiency again, reduces tunnel tunnelling accident.