As core nodes where urban passenger flow, logistics, and information flow converge, urban transportation hubs play a pivotal role in optimizing urban space and enhancing urban functions through the efficient utilization of the land surrounding them. However, the majority of urban transportation hubs in China currently face issues of underutilized land use, such as mixed land functions, fragmented spatial layout, and poor transportation connection, which restrict the exertion of the comprehensive efficiency of the hubs. From the core perspective of integrated architectural and transportation design, this paper combines relevant theories of architectural design with principles of transportation planning. By analyzing the design of underutilized land surrounding typical domestic transportation hubs, it proposes integrated design strategies from four dimensions: mixed-use, spatial integration, transportation connection, and ecological coordination. This research provides theoretical and practical references for the high-quality reconstruction of underutilized land surrounding urban transportation hubs in China.