The paper systematically explores the application and optimization strategy of bored pile construction technology in light of the intricate and dynamic surrounding environment, challenging geological conditions, and significant potential damage, based on extensive research conducted for a subway station construction project. The entire process, from lofting measurement to final hole formation, hole clearing, steel cage fabrication, underwater concrete pouring, and post-grouting construction, is comprehensively detailed. Furthermore, the key control points of bored pile construction are further extracted and summarized. In-depth analysis and discussion are conducted on the two core technical challenges in this project case: reasonable mud proportion control to ensure hole wall stability and prevent the risk of collapse; as well as scientific installation and arrangement of grouting pipes to guarantee grouting quality and subsequent effectiveness. Through comprehensive case analysis and in-depth exploration of key technologies, this paper aims to provide meticulous and practical construction strategies as well as a solid reference framework for similar underground projects, thereby enhancing the quality and efficiency of bored pile construction under complex environmental conditions.