Abstract: A new approach was proposed for the selection of ordering policies to solve the problem of lack of control theory analysis in studying the supply chain operation by use of transfer function, based on the H∞ norm computation. It is implemented the way the transfer function H∞ norm is computed to select the ordering policies in supply chain according to its magnitude computed. Then, two classes of supply are simulated, i.e., the replenishment system and the planning and inventory control (PIC) system in production so as to select the optimal ordering policy for supply chain system.