Abstract: ：This paper mainly explores the Lisu language of Lanping and contrasts it with that of Fugong and Luquan. According to the research, the Lisu language in Lanping can be divided into two categories: 1） one with obvious demonstrative marks or fixed forms in the sentence, such as the determination of demonstrative marks and quotes in the proposed rumor; and 2） one without obvious demonstrative marks or auxiliary words in the sentence that should be distinguished by the context. The grammaticalization of the Lisu language in Lanping is mainly a one-way linear evolution process from the substantive word to the semi-virtual word and then to the functional word. Moreover, the evolution of lexical items and phrases is justified and motivated. In addition, the comparative study finds that the diversity of the presentation system of the Lisu language is related to the richness of the false words in the Lisu language that is proportional to the diversity of the presentation system of the Lisu language.

Key words: Lisu language of Lanping, demonstrative category, grammaticalization, comparative study