This paper is a part of the study on the origin of literature that Mok-Eun pursued. The content of Chinese Classics of Confucianism are much found in Mok-Eun’s poems. Considering this fact, the study examines how Mok-Eun alludes and claims the content of Chiness Classics of Confucianism such as The Great Learning, The Analects of Confucius, The Works of Mencius, and The Right Path, and finds out characteristics of Mok-Eun’s poems through this examination. The following are the summary of the substance discussed in the study. Firstly, Mok-Eun alludes mostly Samkangryeong(three Confucius doctrines scholars should keep) from The Great Learning. This fact reveals the idealistic characteristics in his poems. Secondly, the book that Mok-Eun cites heavily is The Analects of Confucius. Especially he alludes much to An-Hoe’s historical event called Dan-pyo-nu-hang. This fact shows that Mok-Eun bore love of learning, contentment with poverty and delight in the Taoist way in spite of his high public position. Third, Mok-Eun cites chiefly Mencius’s political thought. exhausted energy, and theory that man has good spirit by nature. For example, Mok-Eun’s poem, ’27th Day’. is almost similar to a part of a chapter called Jinsimjang in The Works of Mencius in the content, not formal aspect. Forth. Mok-Eun made poems. understanding the history and content of The Right Path. Among the contents alluded from the book, he used very much the phrase called Yeonbieoyak(Tao is infinite and subtle). Though he could not see the subtle reason. he tried to explain the reason by giving shape to it. This reveals his pursuit for the philosophical reason in The Right Path. This Study can be considered only a draft because it examines Mok-Eun’s poetic thought only relating his poems to The Four Books of Ancient China. Therefore, it necessary to make close examination of the allusion from the whole Chinese Classics of Confucianism in Mok-Eun ‘s poems to understand clearly his literary thought. In addition, the study need include the advanced examination of the allusion from Chiness Classics of Confucianism in poems by Mok-Eun’s contemporaries to establish the history of Korean literature in Chinese character when Sung Confucianism was accepted in Korea. But the advanced examination will be carried out at the next study.