This paper outlines the morphological system of negation and related morphosyntactic phenomena in the Bola dialect of rGyalrong. rGyalrong is a Tibeto-Burman language spoken in the northwestern part of Sichuan Province, China. This language has long attracted the attention of scholars because it has strikingly similar, even identical, shapes to some lexical items of Written Tibetan. On the basis of this fact, some scholars regarded rGyalrong as representing a substratum of Old Tibetan. It is true that rGyalrong area and people have been under the strong influence of Tibet historically and culturally. However, Wolfenden and consequent researches revealed that the language has no direct genetic relation with Tibetan linguistically and that it...