In Vietnam, the plastic industry has developed strongly in recent years but is mainly known as a technical economy for plastic processing because the input materials for plastic production are not fully active, on the other hand, the plastic manufacturing industry has not been properly invested. Therefore, stemming from the actual requirements of our country's plastic manufacturing industry, the article researching and simulating the improvement of PVC production line of Binh Thuan Plastic Company helps to offer an improvement plan, optimize production costs, working time, improve the output of the system.