Abstract: Introduction The schedule management of the procurement plan has been the prime focus of the thesis. In this investigation we measured the procurement schedule using the critical chain project management. The results have shown that there are obvious advantages when the critical chain project management is applied, compared to the traditional schedule management. Method Thus, we demonstrated the feasibility of concluding some approach on how to manage the procurement schedule in the large-scale EPC project based on the critical chain project management. Result The critical chain project managemen emphasizes the importance of identifying core equipment and materials, rationally allocating human resources, setting up appropriate buffer and early warning signals, and playing the role of procurement as a bridge connecting design and construction, so as to effectively strengthen procurement schedule management. Conclusion This work provides some guidance for further study on work of schedule management in the EPC project.