At the scene of emergency rescue, how to determine minimum operating strip(MOS) is still a question after runway is being damaged, and this paper proposes a decision model based on collision detection between damage bounding circles and rectangles. This model helps quickly identify MOS, and establish an evaluation system with 11 indicators, including repair time, mission requirements, and safety. Using the fuzzy analytic hierarchy process(FAHP) and TOPSIS, optimal decisions are made for MOS selection. This model is applied to runway 2 at Al taqaddum airport to simulate debris distribution. This algorithm enables the generation of 250 potential minimum strip solutions, and the best one is selected based on the scenario and mission conditions. This approach demonstrates that the model is suitable for determining the minimum strip post-runway damage.