Aiming at the shortcomings from the implementation of the integrated battlefield environment simulation system in the simulation, the ideas of combining the modeling methods of complex systems based on Multi-Agent and technologies of distributed interactive simulation based on HLA. Firstly, the methods based on Multi-Agent is used to design the inner models of the integrated battlefield environment simulation system, and then the technologies of distributed interactive simulation based on HLA is used to implement the simulating system, the result indicates that it reduces the complexity of system modeling and provides the federations with intelligence.