The application of fire water supply units, through BIM design, achieves a multi-disciplinary integrated layout that meets functional requirements, structural safety, sufficient operational and maintenance space, orderly arrangement of equipment pipelines, and a balance between texture and aesthetics. Through optimization, the limited space within the pump room is fully utilized. The units are assembled into complete modules, enabling an integrated delivery process from design and optimization to factory customization, transportation, on-site assembly, and commissioning and acceptance.