The rapid and effective early emergency response decision is the last necessary parclose after the nuclear accident, so the rapid and effective decision-making is the most important. Firstly, the utility function is proposed to calculate the optimistic coef-ficient of decision makers, then, turned the interval number and fuzzy value into real; After it, a decision model of individuals and groups will be established, in order to improve the effectiveness of decision-making; at the same time ,according to the results of ranking,a judgment matrix will be employed to check out the consistency betw...