Digital transformation is an important trend in the development of today's manufacturing industry, and lean manufacturing execution system (MES) plays a key role in it.MES provides a panoramic view of the production process through real-time data collection and analysis, helping management to grasp the dynamics of production in a timely manner and make flexible adjustments. Through the integration with the Internet of Things (IoT) devices, MES can realize remote monitoring and maintenance of equipment, improve equipment utilization and fault response speed. In addition, the combination of MES and Artificial Intelligence (AI) technology allows for predictive maintenance and optimization of production processes. The visual display of data enables business managers to quickly identify problems and make decisions, thus improving productivity and response time. Ultimately, the implementation of MES not only improves the operational efficiency of enterprises, but also promotes the intelligent transformation of the entire production process, providing enterprises with a head start in the competition in the era of digital economy.