Lean Manufacturing Execution System (MES) is an important bridge connecting the production and management levels of an organization. It improves production efficiency, reduces operating costs, and optimizes resource allocation through real-time data collection, analysis, and feedback.The core functions of MES include production scheduling, quality management, equipment monitoring, inventory management, and so on, aiming to achieve transparency and automation of the production process. Through MES, companies can monitor production progress in real time, identify bottlenecks, and adjust production schedules in a timely manner, thus improving overall production capacity. In addition, MES can be seamlessly integrated with Enterprise Resource Planning (ERP) systems, Supply Chain Management (SCM) systems, etc., to realize data sharing and circulation, and further enhance the operational efficiency of enterprises.