The invention discloses a three-phase electric energy meter clock calibration and error calibration method. An MCU, an electric energy meter and a meter calibration table body are comprised. The electric energy meter comprises a processor, a clock chip, a register, a crystal oscillator and a signal input and output port. The meter calibration table body comprises a controller, a clock calibrationmodule and an error calibration module. The processor is electrically connected with the clock chip, the register and the crystal oscillator. The MCU is electrically connected with the controller. Thecontroller is electrically connected with the clock calibration module and the error calibration module. The clock calibration module and the error calibration module are connected with the processorthrough the signal input and output port. The MCU sends a clock calibration instruction to control the meter calibration table body to carry out clock calibration, and sends an error calibration instruction to carry out error calibration. Through the cooperation of software and hardware, the functions of clock calibration and error calibration of the electric energy meter are realized. Accordingto the invention, the overall cost of the electric energy meter is reduced, and the efficiency of clock calibration of the electric energy meter is improved.