以西安地铁三号线建设为例,通过对其沿线地上、地下文物保护方案的制定,讨论地铁建设与开展唐长安城历史考古结合的可能,提出在现代城市建设过程中,建设行为及其结果,对于古代城市考古研究、遗址保护展示的所能起到的正面作用。 Taking the construction of Xi’an Metro Line 3 as an example, this paper discusses the feasibility of integrating the subway construction with the historical and archeological integration of the Chang’an City through the formulation of plans for the protection of cultural relics above and below the ground. It proposes that in the process of modern urban construction, the construction behavior and its results , For the ancient city archeology research, the protection of the site display can play a positive role.