Abstract: The planning of prefabricated beam yards needs to balance functionality and sustainability, while ensuring the full process of box beam prefabrication, storage, and transportation, while also considering production efficiency and ecological environmental protection requirements. Layout design should follow the principles of intensive land use and green construction, and achieve the dual goals of improving operational efficiency and managing costs through system optimization of production lines and functional zoning. In the site planning stage, the configuration scheme of the box girder storage area directly affects the overall operational efficiency, and quantitative analysis methods need to be used to optimize the storage layout, ensuring the orderliness of beam storage, convenient access, and maximizing space utilization. This article is based on engineering practice requirements and constructs an evaluation system that includes three key dimensions: resource idle rate, total logistics cost, and production cycle duration. Through a combination of on-site survey and data modeling, a refined evaluation of the beam yard layout plan is carried out. This system can accurately quantify the efficiency differences between different schemes, providing a scientific basis for planning and decision-making. Through empirical testing, the optimized layout scheme has shown significant advantages in improving site turnover efficiency, reducing secondary transportation energy consumption, and shortening beam storage cycles, providing replicable optimization strategies and implementation paths for similar projects.