There have been several articles on aesthetic signals in general and aesthetic signals in Vietnamese folksongs in particular. However, so far there are few research on Central Southern folksongs. In this paper, the author present some forms of expression and meaning of the aesthetic signal Troi in Central Southern folksongs, thus partly contributing to a new approach to literary devices from the knowledge of aesthetic signals. Through aesthetic signal troi, the authors fully understand the peculiarities of the workers' ways of feeling, thinking, and expressing-the basic features of regional folklore.