Abstract: To study the inconsistency adjustment of judgment matrixes in analytic hierarchy process(AHP),a new method,named BDA-CAHP,is proposed to compute rank weights which considers the illegibility of scale when it depicts the importance of factors.The judgment matrix is separated into a consistency matrix and a disturb matrix,the process of the inconsistency adjustment is given based on a theoretical analysis of the disturb matrix.Finally,the case study shows that the new method is practical.