Abstract: In this paper,the design train of thouglt about the block arranging-selecting model of AHP is introduced.Taking the selection of favourable exploration blocks in the Tarim Basin as an example,the concrete AHP application is discussed.The practical data in the paper show that it is effective to use this method in petroleum exploration and selectedarea evaluation.The work plan of forward-middle exploration suggested by the authors on the basis of selected-area evaluation results is of important reference to the policy-making of petroleum exploration in the Tarim Basin in the future.