Abstract: By considering the uncertainty of influence factors,a new dynamic capacity prediction model of airport's runway is proposed based on the Dempster-Shafer theory of evidence.According to the max capacity, this paper analyzes runway's capacity model,designs a recognized frame,takes the probabilities of the influence factors predicted by experts as the basic probability of evidences.At last,the Dempster fusion principles is used to get the probability of the runway's prediction dynamic capacity.Experimental results prove the rationality and feasibility of the proposed mode.