This paper presents the military products supplier selection index system based on supply chain, aiming at the real situation of our country and army and considering the development trend of military logistics in the information warfare. This index system can provide certain reference and basis for the current military order and purchasing reform in china. Secondly, the selection method using fuzzy analytic hierarchy process is proposed. In this method, a new kind of possibility degree about triangle fuzzy numbers ranking is established and the differences between this possibility degree and the existing ones are also presented. Finally, a numerical example is given to carry on the confirmation to the selection method.