Abstract
In order to suppress the variances of the production and inventory levels of the multi-stage production inventory system, this paper proposes two types of produciton ordering systems which are classified by the feedback method of the sensored informations, and analyzes the infiuences of the autocorrelation coefficient of demand and the loading ratio upon the amplifications of the production and inventory levels. As a result, it was clear that an effective production ordering system was chaned according to the levels of the autocorrelation coefficient of demand and the loading ratio.