The invention relates to an intelligent diagnosis system based on metering device failures. The intelligent diagnosis system comprises a data collecting and monitoring module, a meta event information generating module and a failure diagnosing and decision making module, wherein the data collecting and monitoring module is used for collecting and uploading related data according to collection frequency and transmission modes, the meta event information generating module is connected with the data collecting and monitoring module and used for comprehensively analyzing and preprocessing the related data collected through the data collecting and monitoring module, matching the collected related data according to the archival information of a user and generating meta event information through a meta event diagnosing model; the failure diagnosing and decision making module is connected with the meta event information generating module and used for carrying out relevance matching according to the meta event information provided by the meta event information generating module to achieve intelligent diagnosing of the metering device failures. Compared with the prior art, the intelligent diagnosis system has the advantages that information is effectively integrated, redundant information is removed, the diagnosing efficiency is improved, and the diagnosing accuracy is high.