This paper proposes a feedback-structured decision-making method using Bayesian approach. The feature of method is the result arising from a choice of alternative is incorporated as the utility represented by probabilistic value. I In this paper, the feedback of alternatives to the criteria is formulated by the idea of decision tree. Therefore, the result originated from the choice of alternative is given by not evaluation but probability. Thus, making the feedback structure with Bayesian approach, we can establish a reasonable decision-making in circumstances of human's active life.