Abstract: Aiming at the development of decision support platform for BDAR(battlefield damage assessment and repair) in airborne materiel camp(DSP-BDAR),this paper puts forward a modeling method of decision optimal model based on related factors.Applying the principle of modeling separability,the method firstly separates and abstracts the related built-up environment and related factors of decision problems from top to bottom,and then sets up a decision optimal model step by step from bottom to top.What’s more,the method adopts a formal representation system to describe the modeling course.In the end,the paper sets up decision optimal models oriented to BDAR in AMC applying the method.The demonstration shows that the method cooperates on the inter-contact between multiple actors when modeling,and does a good groundwork for models’useableness,application and reuse.