Abstract: Discrete event simulation is the process of designing a model of a real system and conducting experiments with that model, for purpose of either understanding the behavior of the system or evaluating strategies for the operation of a system, discrete event simulation is a tool suitable for the study of manufacturing systems and improves the overall efficiency. Arena is a discrete event simulation and automation software developed by Systems Modeling and acquired by Rockwell Automation in 2000.It uses the SIMAN processor and simulation language. In this work, the existing layouts were studied and utilization of each station is analyzed, the efficiency of production depends on how well the various machines, production facilities and employee’s amenities are located in a plant.