Fuzzy method we apply in determining the amount of goods that will be produced a company. In the application of this method into a decision support system requires high accuracy in construction stage of system implementation. In the application of fuzzy methods in the form of coding we have to pay attention to the data we calculated the data that will be. In order to minimize errors in the execution of our form of data into smaller parts. Required data such as maximum demand data and data requests the minimum, maximum inventory data and inventory data minimum and maximum production data and production data as well as data on production of a minimum of goods in a single period. Then the data is used as another form, namely x represents the demand, y represents inventory, and z represent production. After the aplication of the system is completed. Then the calculation of the amount of production work will be easier. Just by entering the data demand, supply, and production into the system. Then run by clicking on the data, the system will process the data on the number of items to be in production. With this system is more practical operational managers in determining production decisions.