By analyzing group decision making processes, it is proposed that there may be some interactions among
experts’ preferences which can be described by fuzzy measures, and a group decision making method with interactions among experts’ preferences is proposed. The method is based on the resemblance degree between the experts’ knowledge and between the experts’ comparison matrices, and the 2-additive fuzzy measures are calculated to represent the importance of experts. Choquet integral is used as the aggregation operators to obtain group’s preference. Finally, an example of naval submarine demonstration is given to show the feasibility and rationality of the proposed method.