The invention relates to an intelligent substation monitoring information diagnosing and analyzing method. The intelligent substation monitoring information diagnosing and analyzing method is characterized in that real-time substation monitoring information is collected and recorded into a basic data database; a substation power equipment action rule base is established and is formed by a substation power equipment knowledge base and a connection relation inference engine base; a substation power equipment monitoring information representation case base is established and is formed by integrating enumerated type monitoring information collected on the field of a substation; obtained monitoring information is analyzed based on the rule base and the case base, a primary wiring graph of the power equipment is correlated, a diagnosis result is inferred, and a fault source is located. According to the intelligent substation monitoring information diagnosing and analyzing method, the substation power equipment action rule base and the monitoring information representation case base are established, analyzing and processing are conducted according to the massive information collected by the substation, the fault judged according to the monitoring information in the substation is diagnosed, and the functions of intelligent fault diagnosing and problem locating of the power equipment are achieved.