The invention belongs to the technical field of power equipment, and particularly relates to a special connection device for a transmission conductor. The special connection device comprises a transmission conductor connector, wherein the transmission conductor connector is in an inverted T form and comprises a transverse part and a vertical part; a patch board I and a patch board II are arranged in the transverse part; a connection hole I is arranged in the patch board I; a connection hole II is arranged in the patch board II; the patch board I is connected with a patch board III located in the vertical part through a left connection pipe; the patch board II is connected with the patch board III through a right connection pipe; and the left connection pipe and the right connection pipe are L-shaped. The special connection device has the advantages that the special connection device is convenient to connect and can meet the turning laying requirement.