Portable threading apparatus for power construction

The invention relates to a portable threading apparatus for power construction, which comprises a wire conveying module, the left end of the wire conveying module is provided with a storage disc, a wire is wound in the storage disc, the free end of the wire passes through the wire conveying module and then extends out of a circulating conveying assembly, and the circulating conveying assembly is installed at the right end of the wire conveying module. A threading head is installed at the free end of the wire, the threading head is in threaded connection with the tractor, a resistance reduction ball body is arranged outside the tractor in a sliding mode, a resistance reduction assembly is arranged on the left half portion of the resistance reduction ball body, and an alarm assembly is arranged on the right half portion of the resistance reduction ball body. Due to the fact that a conduit for threading possibly has a plurality of bending positions, resistance is large when an electric wire passes through the be