The purpose of this study is to examine the orthographic and phonological characteristics of the Yeongsan Sillok(the biography of Yeongsan), published in Jeollabuk-do in the early 20th century. The author of this book is considered to be Jang Bong-seon, an educator from Jeongeup city in Jeollabuk-do. Accordingly, it is expected that this book contains the orthographic characteristics and attitudes toward the language of young intellectuals in Jeollabuk-do in the early 20th century. In Chapter 3, we looked at the orthographic characteristics of this book. The writing characteristics of this book largely follow the characteristics of the 19th century Jeollabuk-do dialect based on the tradition of modern Korean. However, a transitional characteristic of the language transforming into present-day Korean was also present. Although only a few examples have been confirmed, the writing of double consonant letters for tense consonant are gradually similar to the notation method of modern Korean. This can be understood as a dissolution process. At the same time, with the exception of some circumstances of verbs, the tendency to split consonants is widely confirmed, and the modern Korean notation for the /ㄹㄹ/ chain (ㄹㄴ, ​​ㄹㅇ) is gradually changing to ㄹㄹ. Above all, the fact that the notation of ․ or diphthong after sibilants no longer appears in this book is a characteristic feature that differs from data from the Jeollabuk-do region of the same period. This writing trend seems to be related to a set of linguistic norms compiled in the first half of the 20th century. Recalling that the author of this book established a private school in the 1920s and 1930s and devoted himself to educational activities, this assumption is somewhat probable. In Chapter 4, we looked at the phonological characteristics of the Yeongsan Sillok(the biography of Yeongsan). Front-vowelization was very active inside the morpheme, but at the morpheme boundary, it appeared only in the environment behind c. The simple vowelization of jə>e is confirmed throughout the interior and boundary of the morpheme, and it must have been a productive phonological phenomenon in the Jeollabuk-do dialect in the early 20th century, as hypercorrection types also appeared. Regarding the alternation of the ending ‘-a/ə’, when the stem vowel is ‘ø’, there is a high tendency to combine these to ‘-ə’. This is different from the 19th century and modern Jeollabuk-do dialects. In the case of umlauts, only very limited examples were shown. And although t-palatalization is quite actively realized, only a few examples of k-palatalization were shown. Through this realization of phonological phenomena, we were able to confirm whether the young intellectuals in the Jeollabuk-do region in the early 20th century had linguistic attitudes toward the Jeollabuk-do dialect. In this book, the typical phonological phenomenon of the Jeollabuk-do dialect was confirmed only to a very limited extent due to its negative evaluation by the author.