ABSTRACT
This paper introduced the method of industrial engineering, the method of product line balancing, the theory of computer simulation technology, the foreground and application of these methods in optimization of product line. This paper focuses on the application of the theory about product line balancing and related software (GST Flexsim). I will analyze the status quo of producing and producing model in Excellent Fashion. Take an amelioration base on the simulation of product line and then I will compare the two results to explain these tools can give us an intuitional status quo and they are actually benefited to the company.