The following problems can occur in building an event graph simulation model; (1) computer-aided documentation is required (2) simulation system requirement and specification must be consistent and complete (3) computer-aided analysis is necessary. This study develops the Event graph Simulation Definition Language (ESDL) system which can aid (1) computer-aided documentation, (2) checking consistency and completeness for requirement and specification and (3) computer-aided analysis in the Event Graph simulation model. In addition to the analysis rules suggested by Schruben [SCHR 1983], this study also suggests Concurrent-Event Precedence analysis rule to analyze the Event Graph Simulation Model.