With respect to the problem of generating multiperiod emergency alternative without consideration of the decision maker's psychological behaviour, the prospect theory and the decision maker's emergency preferences are introduced into the calculation of similarities of emergency cases. By using the computational method for similarities of cases with the consideration of the decision maker's psychological behaviour, more effective emergency alternative can be selected to response to emergency event. The use of time-series ordered weighted averaging operators for aggregating the similarities of emergency cases takes into consideration of the decision maker's time preferences, which can help the decision maker to choose the emergency alternative better. A numerical example is finally illustrated to show the effectiveness and the usefulness of considering the decision maker's preferences in evaluating multiperiod comprehensive similarity.