The problem of adjusting the weights of decision-makers in multi-attribute group decision-making is studied. An algorithm of weight-adjusting is proposed on the basis of obtaining the subjective weights of decision-makers. The objective weights of decision-makers are calculated by the difference between the decision results of the individual and the group and combining with the theory of entropy. The objective weights are taken as the value of adjusting-weight to adjust the weights of decision-makers. The result is calculated after the adjustment, and the weight-adjusting is continued on the basis of the
new result. The steady weights and final result of group decision-making are calculated after the process of adjustment. Finally, a numerical example shows the feasibility and practicability of this method.