The utility model provides an use GPS clock synchronization's travelling wave range finding calibration equipment, include: satellite time synchronization unit, treater and with display, signal transceiver unit, parameter input unit, memory cell, digital analog conversion unit and current module unit that the treater is connected. During above -mentioned calibration equipment downloads predetermined bi -polar trouble wave form or inputs use GPS clock synchronization's travelling wave range finding calibration equipment through parameter input unit, utilize GPS satellite synchronizer to triggerin step, in order to export high frequency current to travelling wave trouble range unit, so that the travelling wave wave head time difference that trouble travelling wave wave head that the use GPSclock synchronization's travelling wave range finding calibration equipment that travelling wave trouble range unit received according to this side sent and offside travelling wave trouble range unitsent, wave speed and circuit overall length, orient fault location, the fault location of final with actual wave form compares, with the mesh that reaches the check -up.