The analysis method of weapon system was restricted to single equipment or single weapon system at the present time. This paper mainly solves this problem from the viewpoint of weapon systems and hierarchical structure, and put forward the analysis concept of multi-levels. It includes the level of single weapon, the level of weapons system, and the level of polymeric weapon system. And based on Stratified analysis method, this paper puts forward a method based on power exponent model while analyzing the level of single weapon; complex system network theory while analyzing the level of single weapon system; combined the framework of exploratory analysis with system dynamics simulation at the analysis of level of polymeric weapon system. This method has better adaptability and availability.