This article was designed to examine the changes in the disaster records and knowledge system of Joseon intellectuals in the 17th century, focusing on the disaster-related prose of Myeonggog ChoiSeogjeong. First of all, Chapter 2 summarizes and presents disaster-related prose contained in the collection by subject, starting with the work of examining representative disasters that occurred in the Joseon Dynasty in a large framework. Next, in Chapter 3, the work of analyzing the previously extracted prose works was conducted, and first, the works that requested to improve the problems caused by disasters. Accordingly, it was confirmed that Myeongog actively expressed his opinion in a disaster situation by earnestly urging the king to think of a way to eliminate the disaster by taking the form of raising the word of caution.Second, it was intended to understand the occurrence of the Great famine and the aspect of Myeongog’s suggestion of various policies to solve it. In the case of the Joseon Dynasty, as agriculture was the center of national management, the Great family caused various social and economic problems, and Myeongog confirmed that he expressed his opinion through public sentences in terms of policy. Third, through the resignation petition to the king and the petition to the king, he captured the image of Myeongog agonizing over the duties of intellectuals, and found that he truly understood the hardships and pains of the people who suffered disasters such as drought and rainy season. In this way, this article has the primary meaning in that it looked into Myeongog as an intellectual who is interested in various problems of people’s livelihoods and tries to solve difficult situations in reality. In addition, it is important to understand the Joseon Dynasty in the 17th century by grasping various disaster situations that occurred at the time through Myeongog’s work, and at the same time, it looked at an aspect of the intellectuals’ perception of reality.