With the acceleration of urbanization, land resources are becoming more and more precious, especially in densely populated urban centers. As an efficient land use model, the subway overlying complex can not only optimize the urban spatial layout, but also promote the integration of public transportation and urban development. This paper aims to discuss the collaborative design and construction technology of the building structure and foundation of the subway overcover complex, in order to provide theoretical support and technical guidance for the practice in related fields. Based on the literature review of domestic and foreign subway overcover development projects, this paper reviews the research status and development trend in this field, and identifies the main problems in structural safety, foundation stability and construction efficiency. On this basis, the paper puts forward the design principle of the subway overcover complex, and emphasizes the key role of the synergistic relationship between the structure and the foundation to the success of the whole project. The paper further analyzes the construction technology of subway overcover complex, including specific construction technology, reasonable construction sequence and project management measures. Through comparative analysis of success and failure cases, it reveals the problems that may be encountered in the actual operation and its coping strategies.