The paper mainly summarizes the research results of the Hengyang dialect since the 1980s,and re-views the current research status of the Hengyang dialect in Hunan Province from the perspectives of grammar,phonology,dialectal vernaculars,and language applications.From the grammatical level,some of them analyze specific grammatical phenomena from a micro point of view,and study the special syntax in Hengyang dialect;and some start from a macro point of view,and analyze the grammatical expressions.From the phonological lev-el,some explore individual dialect word tones from a co-temporal perspective,while some elaborate on the evolu-tion of dialect word pronunciations from an ephemeral perspective.