In order to effectively play the decision-making advantage of C2(command and control) organization′s centralized decision-making and collaborative decision-making, the decision-making assignment problem of Holonic-C2 organization with dynamic ability of decision-making authority was studied. In view of the shortcomings of the subjectiveness of expert fixed weights in group decision making, an expert group selection method based on the combination of expert authority and opinion consistency was proposed. This method improves the objective rationality of multi-attribute decision making. In view of the dynamic evolution of decision allocation, a decision-making evolution mechanism based on multi-stage decision making was proposed. The change of attributes in the front and back stages was considered in this method, and the decision mode transition mode in the adjacent stage was given. The simulation results show that the proposed method can give the ranking of the relatively objective decision-making modes and the multi-stage evolutionary route, which proves the feasibility and effectiveness of the method.