China’s clothing industry occupies an important position in the manufacturing sector, with most enterprises being heavily reliant on the market, making both clothing styles and output subject to market demand. With the continuous economic development, consumers’ requirements for clothing styles, functionality, and quality are increasing, prompting companies to urgently seek transformation and upgrades. This article focuses on the production process of the Type A shirt sewing workshop at Company ZY. Through research, it was found that this production line has issues such as low productivity, imbalanced production lines, and noticeable bottleneck processes. The study improved the balance of the production line based on the IE (Industrial Engineering) method, ultimately helping Company ZY enhance production efficiency and product quality, achieving a good level of balance for the clothing sewing production line. This also provides a practical case for production line optimization for the entire manufacturing industry. This article has significant practical implications for optimizing production processes in clothing enterprises and serves as a guiding reference for the study of optimization issues.