Inventory management is day to day challenge for management. Inventory management is a field of production and balance stock of raw material for achieve the target production goal. The paper will focus on the calculation of optimum stock of inventory. This paper will also discuss various cost of storage inventory, economic order quantities, stock levels and shortage cost etc. In this Paper We have discussed the Inventory data of a industry and have comparative analysis on year wise. We will show the comparative study in the cost of inventory according to the level of the stock.