The article summarizes the structural design of modern trams adopted in Hunnan, Shenyang comprehensively. Selection of structure types for large-span buildings, structural calculation and the method dealing with the special problems are described in detail. Calculation of temperature effect for an ultra long underground garage is analyzed. Pre-stress and some suggestions are proposed and favorable effects are obtained. This paper also introduces a design content of a station and concludes problems encountered in construction. The analysis is good for structure design and construction cooperation in future.