Since the Committee of Transportation, MOTC, implemented the Taipei MRT preliminary planning in 1977 and commissioned the MAA Group to conduct geological and soil survey in 1978, MAA has been serving as the geotechnical engineering special consultant (GESC) for the Taipei MRT initial network, the detailed design consultant for the subsequent network—the Neihu line (the extension of the Muzha line), Xinyi line, Songshan line, Tucheng extension to Dingpu, Circular line, and Xinyi eastern extension—and the risk management consultant for the Taipei section of the Taiwan Taoyuan International Airport MRT line. While playing the role of GESC for 15 years, MAA provided technical services associated with geotechnical engineering for the construction of the Taipei MRT Tamsui, Banqiao, Zhonghe, Xindian, and Nangang lines and has won the trust of the Taipei City Department of Rapid Transit Systems (DORTS) and its affiliated projects offices. Starting in 2000, when participating in the Neihu line (the extension of the Muzha line), Xinyi line, Songshan line, Tucheng extension to Dingpu, Circular line, and Xinyi eastern extension, MAA dedicated itself to the enhancement of MRT technology and quality, environmental protection, landscape art promoted by DORTS. The enhancement approaches included value engineering, innovative thinking, advancement concepts, studies and analyses of new materials and new construction methods, introduction and studies of green construction and energy saving approaches, MRT landscape and public art, renewable energy evaluation, professional technician signing for public works supervision, technology transfer training, and case studies and evaluation. In recent years while conducting the detailed design of the Circular line, Songshan line, and Xinyi eastern extension, MAA applied the building information modeling (BIM) integrated system to MRT design interface integration. Introduction of the high efficiency BIM tool allows interface to be avoided in the design stage through coordination and integration, helping to improve efficiency, ensure design quality, and achieve the goal of excellent design. In this article, the authors review MAA’s 36 years of participation in the MRT construction and its role in passing down technology and experience.