The purposes of this research are 1) To analyze optimal ordering of pati onggok raw materials in UD. Jaya. 2) To knows safety stock of pati onggok raw materials in UD. Jaya. 3) To knows reorder point of pati onggok raw materials in UD. Jaya. 4) To knows the total inventory cost of pati onggok raw material in UD. Jaya. 5) Analyze the factors that influence the supply of raw materials for pati onggok in UD. Jaya 6) Analyze the trend of pati onggok raw material needs at UD. Jaya eight weeks ahead. The research method used is descriptive method. While the implementation method using a case study method. The results of the research were analyzed using the EOQ method, safety stock, reorder point, total inventory cost, multiple linear regression, and trend. The results of this research are 1) Ordering the optimum raw material for pati onggok using EOQ is 37,389.91 kg/week. 2) Safety stock of pati onggok is 353 kg/week. 3) The reorder point is need to do if the pati onggok raw material in the warehouse is 3,704.2 kg. 4) Total inventory costs using EOQ is Rp. 1,633,191.26,00. 5) Factors that affect the supply of pati onggok raw materials in UD. Jaya are raw material prices, total usage, ordering costs, and storage costs. 6) The trend of the need for raw materials for pati onggok for the next eight weeks from January to February 2019 tends to decrease.