Abstract: It was carried out that the researches on technical standard improvement, standardization, transfer station, affiliated engineering design and station space development during architectural design of Xi'an No. 3 metro line. Thesuccessful experience in the deisgn of the constructed metro stations and those under construction at home was alsoused for the architectural design, which compensated the deficiency of the architectural design of the past metro lines, thus resulting in standardization and unity of the architectural design of Xi'an No. 3 metro line. Meanwhile a rationaldevelopment of station space was also done during the erchitectural design, which provided support for the sustainabledevelopment of metro construction in Xi'an region.