The invention discloses a security event log acquisition and processing method and system for multiple types of supervision objects. The multiple types of supervision objects comprise host equipment,network equipment, a database, security equipment and application operation behaviors. The security event log acquisition and processing method converts the structures of all the collected security event logs into a unified data structure, extracts predefined key field information on the basis of data in a unified data format, fully covers a monitored object, dynamically discovers the monitored object, and effectively masters the state of a security object of a new generation of power grid dispatching control system.