In this paper the model and solution of multi-attribute decision making(MADM)with interaction a- mong attributes are analyzed based on k-additive fuzzy measure and Choquet integral.The optimal value of k is identified on the basis of direct-relationship matrix of attribute;the weights of attribute and their combines are determined through Marichal entropy;the synthetical values of the alternatives are computed by Choquet inte- gral;and the alternatives are ranked.Finally,an example is given to v...