The preface, postscript, foreword, and general notices of the Korean Chinese dictionary, contain not only the reason and purpose of compiling the dictionary and the relationship with other Chinese dictionaries, but also the understanding and even the view of Chinese characters in ancient Korea. Combining the contents of the preface, postscript, foreword, and general notices of Korean dictionaries, as well as other Korean Chinese literature, it analyzes Korea’s understanding of Chinese characters, and explains the main contents of Korea’s view of Chinese characters from different dimensions, such as the dissemination of Chinese characters, Chinese characters ontology, and the use of Chinese characters. On this basis, a comparison is made with the views of Chinese characters in Chinese dictionaries and other literature and Chinese character views in Vietnam, to provide new perspectives on the study of extraterritorial dissemination of Chinese characters and Korean Chinese characters.