For intuitionistic fuzzy multi-attribute decision-making problems where the preference is conflictive and the weight information is unknown, a decision making method is proposed based on multi-objective decision making. Firstly, the multi-objective decision model of decision differences degree and preference conflict degree being chosen as the goal functions is proposed. Then, the attribute weights and decision makers weights are obtained by using the minimax method for solving the model, and the optimal scheme is established. Finally, an example shows the effectiveness of the proposed method.