The active management and control of active distribution network(ADN)involves the interactive participation of numerous users and various systems, which needs an unified common information model to maintain semantic uniformity of information and promote information integration from the metadata level. Considering the interaction difficulty among distribution automation subsystems caused by different information models, based on the ontology theory, a depth-limited mapping algorithm is proposed to efficiently achieve the automatic matching and mapping of heterogeneous information models. Meanwhile, a multi-level model verification tool is developed based on information schema, ontology model and topology rules to test the message format, information model and model quality of exchanged information, and filter out abnormal information. Tested by a study case with distributed generation, the proposed mapping algorithm and verification tool is verified effective, and can help maintain the consistency of interacted information and promote information integration of ADN.