This paper takes six Chinese Textbooks in the late Korean Dynasty compiled by Wang Weihui and others as the research object, selects and counts the high-frequency words, and analyzes their characteristics from the aspects of syllable number, part of speech, use in modern Chinese, meaning content, dialect background and so on. It is found that only monosyllabic words and disyllabic words appear in the high-frequency words in the late Korean Chinese textbooks, and the parts of speech are mainly verbs and nouns. Modern Chinese uses some words of high-frequency words, and some high-frequency words are no longer used. In terms of meaning and content, high-frequency words are highly related to commercial and trade activities. At the same time, there are some spoken words and a large number of northeast dialect words.