The discussion of issue on minority tribes has emerged as an international trend. In addition, scholars in various fields around the world are required to shoulder the responsibility for paying attention to and making research into minority and powerless tribes. The Taiwanese indigenous play a substantial and important role in the history of the development of the world southern islands tribes. However, its next generation is currently faced with test and trial that have never been seen previously. In particular, the using, learning and continuance by the Taiwanese indigenous youth of their mother tongue serve as the key to the sustainable development of the Taiwanese southern island tribes. This study surveys 1,643 indigenous young persons of certain institute of technology in the north area. By further looking into related factors, including the field they use their mother tongue, the fluency of their mother tongue, the place where they live and the marriage of their seniorities, this study attempts to interpret the circumstance the Taiwanese indigenous youth is faced with in connection with their mother tongue.