本文用比较对照的方法 ,从《三国史记·地理四》中解读了高句丽语言中的 2 0个词语 ,并且还发现有 10个高句丽语词语的读音与日本语的读音几乎完全一致。本文以含有高句丽语词语的资料为依据 ,初步判明高句丽族居民既讲高句丽本族语言 ,同时又能讲汉语 ;高句丽族使用的文字是汉字 ,而且是在两种情况下使用 ,即一方面按原意使用汉字汉文 ,另一方面使用汉字标记高句丽语的语音 ,将汉字作为一种标音符号 ,从而进一步论证高句丽文化是古代中华文化的一个重要组成部分 In this paper, we use the comparative method to interpret 20 words in the Koguryo language from “Shigeki geography 4 of the Three Kingdoms” and find that the pronunciation of 10 Koguryo words is nearly identical with that of Japanese. Based on the data of Kogury 丽 language, this article first concludes that Goguryeo residents speak both Goguryeo language and Chinese at the same time. The characters used by Koguryo people are Chinese characters, and they are used in two situations: on the one hand, The original use of Chinese characters in Chinese, the other hand, the use of Chinese characters mark the language of Koguryo, the Chinese characters as a phonetic symbol, thus further demonstration of Goguryeo culture is an important part of ancient Chinese culture