The invention discloses a false wiring analysis method of a three-phase three-wire-system electric energy metering system. The method comprises: an electric energy metering system wiring error characteristic database is established, wherein each type of wiring error characteristic in the database corresponds to one corresponding error characteristic code; measurement data are obtained; the database and the acquired measurement data are inputted into a host; data processing is carried out; to be specific, the host carries out data processing on the values of the obtained measurement data and generates a characteristic sequence; a diagnosis result is analyzed, the characteristic sequence is compared with the database, and a error characteristic code matching the characteristic sequence is screened out from the database, so that the type of the diagnosed wiring error is obtained. Therefore, the automatic diagnosis of the wiring error characteristic of the electric energy metering system is realized; the high accuracy of the diagnosis result is ensured and the diagnosis efficiency is improved; and problems of high requirement on the theoretical knowledge level of the maintenance personnel and high misdiagnosis rate of the manual diagnosis during the manual diagnosis process are solved.