Abstract: In the manufacturing sector, the expectation of production and demand is the challenging one.To manage the above, it is necessary to concentrate the efficiency of the worker and replacement policy of the machines, the logistics and it supplies of the raw materials. Here to develop a model of inventory planning of varying production for changing deterioration items with linear demand, the keeping of the stock in a place is considered as fixed, the rate of deterioration is changing with time,using thesesupposition to develop mathematical formationprovides the solution in numerical and its parameter changing shown using computation table and represent using graphs. At last to check the time should be optimal, more quantity and very least overall average cost.