The paper discusses the current main vowels and their structure of the ancient Kaikou finals of nine dialect spots in southern Guangxi, and offers their difference compared with Cantonese.

• 本文讨论了古开口韵在桂南平话九个地点方言今读的主元音及韵母格局,并与粤语进行比较,进而说明桂南平话与粤语韵母格局的异同。