The invention discloses a method for carrying out site testing on accuracy of wired time transmission. The method comprises the steps of: carrying out satellite common-viewing by a standard clock and a time measuring device, and generating a standard clock common-viewing file and a time measuring device common-viewing file; by the standard clock common-viewing file and the time measuring device common-viewing file, regulating time of the time measuring device so as to complete time calibration of the time measuring device; connecting the standard clock with the time measuring device by a transmission link of a wired time transmission network; comparing site time obtained by the transmission link with the time of the time measuring device so as to determine accuracy of wired time transmission; and according to a measurement result of the accuracy, generating a measurement report.