Model integration problem occurs during the integra tion of enterprise information systems. Models comparison is an essential step of the integration, and has been discussed in several domains and vari ous models. However, previous approaches have not corre ctly handled the semantic comparison. In the current paper, we develop a comparison hybrid appro ach which takes into account the syntactic, semantic and structural comparison aspects. We provide a rule-based system for models comparison. For this purpose, we use a domain ontology as well as other resources such as dictionaries.