The Original Characters of Hakka Dialect is a work of Qing Dynasty scholar Yang Gonghuan who researched the original characters of the Hakka dialect and explained the words and expressions of the Jiaying Hakka dialect. At present, no scholar has conducted research on Hakka Benzi from the perspective of pronunciation annotation and textual research. The article uses Hakka monosyllabic words in Hakka Benzi as the research object to explore the general rules of phonetic annotation, and the phonetic interpretation of individual terms exists. Analyze and summarize these problems, and verify them from three perspectives: overview of phonetic and meaning annotations, phonetic annotations, and phonetic annotations supplements and corrections.