Abstract: By studying the ontology theory and applying emergency service ontology model (ESODM) for emergency service for unified modeling, emergency service will be united in expressing the semantic level. Using the seven-step method developed by Stanford university school of medicine , ontology tool (Protégé) and ontology language OWL to build the ontology library of emergency service, so that emergency service information can be understood by computer, the emergency service information can be intelligently accessed and retrieved and also the emergency service information can be shared and exchanged in the semantic level.

Key words:  ontology, emergency service, ontology model