Abstract: On the basis of the comprehensive consideration of technological,economical and safety factors of the ventilation system in Wulan Coal Mine,a set of evaluation index system conforming to the actual mine ventilation system proposal was analyzed and set up.In this paper,mine ventilation system proposal in Wulan coal mine is optimized the evaluated by introducing haiming weight distance.Implementation program results showed that the running state of present mine ventilation system achieved the goal of reasonable optimization.