Abstract: The acquisition of attrib ute weight is acomplex problem in the process of evaluating乙decision making. To research the attribute weight information based on FN-E&DM is obtaining the weights by solving the model. Main developments of weights based on FN-E&.DM were surveyed from three aspects that weight information is known completely, incompletely and unknown completely. The solving model was analysed and acquisition method of attribute weight was discussed. Finally, the future researches of weights based on FN-E&DM were prospected.

Key words: Fuzzy number, Evaluating乙decision making, Weight information