As the installation and application of intelligent electric energy meter, users who questioned the veracity of meters are increased gradually. It prompts a new topic which can make the customers calibrate the error of meters conveniently by themselves. In this paper,a self-service device is designed,which can make the customers calibrate error of meters with the help of staffs or simple guide signs. The self-service error calibration device plays a role similar to "a fair balance to ensure the accuracy and fairness , which can improve the social credibility on electric energy metering.