This paper presents a Manufacturing Execution System (MES) for the composite component manufacturing workshop of an aerospace enterprise. The production process management is the core module of the MES. The system shows the production process management has important effect on the workshop production. The function modules of the production process management are introduced in detail. An improved working flow of the production process for optimizing the traditional production process is emphatically described. Barcode technology is applied to collect the production data and quality inspection data. By scanning the barcode, the real time data information can be collected and data statistic analysis can be done rapidly. The integration relationship between the production process management system and other systems is also introduced. Three-layer structure is adopted to design and develop the system. The developed system has been applied in the composite component manufacturing workshop. The results show that working efficiency of production process management has been improved.