The invention discloses an electric energy metering chip-based terminal calibration system. The system is characterized by comprising a host computer, a three-phase program control source, a standard meter and a plurality of calibrated terminals, wherein the host computer controls the three-phase program control source through a serial port, the three-phase program control source provides calibration conditions needed by the calibrated terminals and a measured value of an electric energy metering chip under a corresponding calibration condition is obtained at each terminal; the standard meteris used for measuring a practical value of a calibration condition output in the three-phase program control source; the host computer transmits the practical value of the calibration condition measured by the standard meter to each calibrated terminal; and under the calibration condition, the calibrated terminal acquires a calibration parameter according to a calculation deviation between the measured value and the practical value of the electric energy metering chip. The system of the invention has the advantages of simpleness, easy control, short consumed time and high calibration accuracy.