Simulation models of C⁴ISR possess the properties of multi-granularity in development and relating to many application domains. During the phase of development, those simulation models may have pertinent relationship. The current research proposed simulation model system for C⁴ISR systems development, which provided simulation model with standardization description. First, simulation concept model wasestablished, which consists of simulation entity, organization structure, interface junction, information interaction, function, activity and dynamic behavior for simulation entity to reflect C4ISR systems characteristic abstractly. Simulation component model was designed with hiberarchy idea, which is composed of atomic component model and complex component model. Each component model consists of component description and component implement, whose component description adopts formatting form to describe component model roundly. Finally, component model was encapsulated in Web Services and published as simulation model service which is described in formalization. Through simulation model system and model specification description, simulation models of each development phase can be associated organically, which promotes model reuse and interoperability,and improves system development simulation efficiency.