According to the demand of simulation for virtual battlefield scene of armored forces, based on Vega/Creator, the optimized algorithm and its generic process of terrain creation is discussed, the database structure of armored car model is established, the build method of special battlefield effect is dissertated based on particle system, a new particle is brought forward which applied in simulation for the special battlefield fog effect, and some methods are summed up to enhance the real-time of simulation system. The system has been applied successfully with good effect. The system has strong real-time and immersion, and the database is easy to be maintained.