Abstract: Targeting the problems in metro station space design such as inefficient space utilization, insufficient integration of pipe lines and terminal equipment, over construction and decoration, the case study method is adopted, with reference to relevant design theories and practical engineering of Beijing Metro Winter Olympics Games Branch Line, and the design concept of metro station public area based on ′space manifestation′ is proposed and elaborated. Research results show that station public area should have basic design goals of transparency, exposure, brightness, vigor and order. Interior architects should direct the comprehensive organization of spatial and visual interface, all related professions should join the collaborative design. By station interior spatial planning of fully utilizing the interface morphology of space, management and control equipment and structure, the functional demands are satisfied while visually aesthetic forms are considered as well. Meanwhile the construction workload is reduced, and thus the design goal of green, energy-saving, low-cost and high-efficiency is achieved.