The invention discloses an abnormal detection and processing method of electric energy data based on electric energy metering events, comprises the following steps: receiving and summarizing data information of electric energy metering system, specifically comprising: receiving and summarizing archive data, table code data, change table item data and change CT item data of all electric energy metering systems by the client, and simultaneously carrying out warehousing processing; Comparing the data information, judging whether the data is abnormal or not, recording and alarming if the data is abnormal, specifically including: comparing the data size of the bottom table code of the upper table and the bottom table code of the lower table, if the bottom table code of the lower table is smaller than the bottom table code of the upper table, writing the record into the abnormality table code event table; By comparing table code abnormal event table and change table item, change CT item model, judge whether there is change table item in abnormal event table or not, change CT item. The invention improves the work efficiency of the operation and maintenance personnel, and ensures the accuracy and availability of the data collected by the electric energy metering system.