IT system event standardization realization method

The invention relates to an IT system event standardization realization method. Messages of different protocols and content are converted into standard messages; the standard messages are matched with a rule library; and the standard messages are identified as standard events by applying the rule library through key attribute characteristics of the standard messages. The method comprises the following specific steps of previously regarding original messages sent by different protocol packages as an attribute set; extracting all attribute data; performing storage in a unified key-value format, wherein the messages stored in key-value are the standard messages; then extracting key fields of the standard messages; identifying protocol types adopted by the messages by applying the rule library; according to the protocol types, applying corresponding rules, wherein key attributes required to be matched and expressions for extracting key field information are defined in the rules; and when the content in the origin