For the analysis of various extruder models are used not only testing, but also diverse simulation techniques. Of them, the three-dimensional technique is widely used recently. In this study, the breaker plate in a polymer resin extruder was analyzed. The breaker plate changes the rotational motion of the polymer resin extruded from the screw barrel into a straight line motion before it passes through the die. Also, the size and number of circular holes in a breaker plate directly affect polymer resin extrusion molding. In this study, a 3-D modeling was used to conduct the structural improvement of breaker plates, and the thermal/flow analysis program CFdesign was used to conduct a dynamic property analysis in a bid to achieve the production stability of extruders.