In order to construct rational and practical operation models of armored forces, the operation modeling of armored forces is divided into three phases to establish martial-notional model, mathematical-logical model and software model, based on the principles of the operation modeling of armored forces. The operation action of armored forces is described into operation task layer, operation action layer and operation motion layer. Then, establish the corresponding model system of armored forces decision support system, which including: basic action model system, tactics action model system and command decision model system. At last, design the system model base based on decision support system. The studying has important military significances and realistic effects to improve the level of our armored-forces commanding decision and realize its scientific decision.