随着城市建设的不断发展，土地的取得日益困难，节约土地及土地资源有效利用成为全世界城市发展的必然趋势。如台北车站特定专用区，原早期规划用于地面的轨道交通及长途巴士，因台北市的快速发展，已严重影响城市交通，故政府于30多年前一次性地将铁路以及尚处于规划阶段的捷运、高铁等轨道交通先规划于地下空间，再先后依序完成，并利用部分地下空间规划商业及人行通道。另外，于地面规划立体长途巴士转运站，让车辆及行人分别与地面高架道路及地下空间连通，此空间的整合不但使运输量庞大的轨道交通有效地利用于地下空间，且减少长途巴士对地面空间的冲击，使旅客及行人能于地下空间无缝对接，增加通行的便利及安全，创造另类的地下经济。台湾由于地狭人稠，为配合经济发展，对土地的利用相当精致，特以台湾经验论述之，就教诸先进。

With the continuous development of the city, land obtaining has become more and more difficult. Land conservation and efficient utilization of the land resources become the trend of urban development. In the case of Taipei Railway Station Special District, due to the rapid development of Taipei City, the original train rails and the longdistance bus transportation built on the ground surface had already impacted the public transport. Therefore, 30 years ago, government of Taipei City planned the subterranean maps of Taiwan Railway, Taipei MRT, Taiwan High Speed Rail (the last two were under planning stage), commercial zone, and pavement simultaneously, then constructed in sequence. And it also mapped out a threedimensional longdistance bus transfer post on the ground surface, let vehicles and pedestrians commute between the ground viaducts and underground space. This space will not only make a huge move to integrate transportation of rail traffic in the effective use of underground space, but also reduce impaction on the longdistance bus space on the ground surface. Turning massive railways into underground space decreased the disturbance to the ground surface traffics, built safe and convenient space for pedestrian and travelers, and brought the alternative underground economy. Moreover, it is especially appropriate to discuss the underground space development topic through Taiwan experience, due to the dense population and the remarkable utilization of land.