Aboriginal languages in Taiwan are in danger of extinction. The issue must be amended by language planning and language policy. The purpose of this article is to apply the concept of linguistic landscape to the planning of language maintenance. Linguistic landscape refers to "the visibility and salience of languages on public and commercial signs in a given territory or region" (Landry & Bourhis 1997:23). In the article I argue that the construction of linguistic landscape can benefit the maintenance of the Aboriginal languages. I also discuss the correlation between linguistic landscape, ethnolinguistic vitality and language maintenance. Furthermore, the article provides reasons for the construction of linguistic landscape for the Aboriginal languages, along with pointing out the problems of corpus planning which are related to the construction of linguistic landscape.