The invention relates to the technical field of electronic information, in particular to a portable short circuit earthing wire and a geographic location monitoring method of a 3G network. The invention has the technical scheme that the portable short circuit earthing wire comprises a wire end clip, a copper stranded wire, an earthing end clip, an earthing end handle, and a GPS (Global Positioning System) positioning module, wherein the wire end clip is connected with the earthing end handle by the copper stranded wire, the earthing end clip and the GPS positioning module are arranged on the earthing end handle, and the GPS positioning module adopts a CPU control panel and is used for monitoring the geographic location information and 3G module transmitting information. The portable short circuit earthing wire has the advantages of fully utilizing a cellular mobile communication technology of the high speed data transmission of the 3G network and realizing seamless roaming of communication and strong real-time property. The monitoring method can be used for accurately tracking the working position of the portable short circuit earthing wire.