The invention relates to an electric energy meter system anti-interference control method. The method comprises the following steps: before a CPU reads data, firstly whether an external memory is in normal working or not is determined, which means that a method of sending a tagged word to the external memory, reading out the tagged word and determining whether a result is consistent with the sent tagged word or not is employed, if so, it is proved that the external memory is in normal working, at that time, data read from the external memory by the CPU is correct data, if not, it is proved that the external memory still does not in normal working, after a period of time, the tagged word is sent to the external memory again for carrying out detection until a read result is same with written data, repetition number n is set, when repetition is carried out n times, the read result is not same with the written data, a system is restarted, and the memory is protected. By employing the method, a phenomenon that power supply voltage rises too slow and leads to wrong modification of a record result is avoided.