An algorithm is proposed for the non-consistent judgment matrix in AHP.A primary judgment matrix is generated firstly through pre-ordering the targeted factor set

and a compared matrix is built through the top integral function.Then a relative error matrix is created by comparing the compared matrix with the primary judgment matrix which is regulated under the control of the relative error matrix and the dissimilar degree of the matrix step by step.Finally

the targeted judgment matrix is generated to satisfy the requirement of consistence and the least dissimilar degree.The feasibility and validity of the proposed method are verified by simulation results.