The construction process of engineering projects is complex, encompassing multiple critical stages such as engineering design, raw material procurement, and construction. Although the nature of work varies across these stages, they are highly interconnected. Any issues arising in one stage can impact the effectiveness of work in other stages. Under the EPC model, engineering project management can integrate the processes and resources of project construction, thereby enabling full-process control and thereby enhancing management efficiency while reducing risks. This article primarily analyzes the concept and characteristics of the EPC model and summarizes the key points of engineering project management under the EPC model at different stages, including decision-making, design, procurement, construction, and completion acceptance. Finally, it proposes optimization suggestions for engineering project management under the EPC model, providing a reference for the high-quality implementation of the EPC model in engineering management.