Objective : In "Guanja" there is a clear system with xin and shengren as the central figure, which can be correlated with the united thought can be found in "Huangjenaegyeong". Method : In studying Oriental medicine, we will try to compare the Guanza and Huangjenaegyeong, in that what Sin is doing and how Seongin(聖人) does the work to achieve his prupose, and how Sin has philosophical meaning. Result : Guanja targets a unified government with the king centered, always issues an order, at the same time Guanja survey the system of the military, economy, retainer, people in the gross. In Guanja the Seongin is the ideal king, who understands the four seasons and command in timely, and rule his people using Muui(無爲). Sin is the center which achieve Dao(道) in mankind, and in the government system it is compared as the king to the rellation between king and retainer. "Huangjenaegyeong" is a medicine book which persued the united medical theory and algorithm. It made the general system algorithm, and united many different theories with the Seongin centered, who understand the 天氣 (including four seasons) and can control the human body. In this book, Sin is the center which control other organs. Conclusion : Political philoshphy in Guanja and the united thought in "Huangjenaegyeong" can be correlated in that two both aim for the systematization and the unity.