As an innovative energy storage solution, the seawater pumped storage power station holds significant potential for addressing challenges in large-scale energy storage and maintaining grid stability. This paper provides a systematic examination of the construction process for such stations, detailing critical technical aspects including site selection criteria, foundation engineering methods, seawater conveyance system construction, and the installation, commissioning, and integration of key equipment. Special attention is given to the unique challenges associated with marine environments, such as the assessment and mitigation of ecological impacts, the implementation of advanced anti-corrosion technologies for structures and pipelines, and the management of complex geological and hydrological conditions in coastal areas. In response, targeted engineering strategies and environmentally sustainable construction practices are proposed to ensure project safety, reliability, and long-term performance. By integrating practical experience, technical innovation, and environmental stewardship, this research aims to provide a valuable scientific reference for the planning, design, and execution of seawater pumped storage power projects. Ultimately, it supports the broader adoption and continuous improvement of this technology, contributing to the diversification of renewable energy systems and the realization of a low-carbon, resilient energy future.