Based on sets of data, model and user interface, this paper proposed the design ideas of optimization model-driven optimization decision support system of equipment support, and expanded to design the entire functions and structures. The model library is built with algorithm base, model base and application base involved. By introducing script models that procedural combined with optimization models through sequential, optional and circulating structures, the system flexibly adjusted to solving variety complex optimization problems of equipment support and decision making. Application examples showed that it could highly improve the army's capabilities of accurate equipment support.