The utility model relates to a transmission line fault precision positioning device utilizing multiterminal signals, which comprises a voltage transmitter, a current transmitter, a GPS signal receiving board, a data collection card and an industrial control computer, wherein the output ends of a voltage mutual inductor and a current mutual inductor are connected with the input ends of the voltage transmitter and the current transmitter, and the output ends of the voltage transmitter and the current transmitter are connected with the input end of a V/F board. The output ends of the V/F board and the GPS signal receiving board are connected with the input end of the data collection card, and the output end of the data collection card is connected with the industrial control computer via an ISA main line. The utility model can be used for positioning faults generated on a transmission line, positioning accuracy is high, various factors have little influence on positioning errors and the utility model has favorable robustness.