Abstract
Simpo(心包. Pericardium) was described early in "Hwangjenaegyeong(黃帝內經)". But there has been a lot of criticisms about this organ. Jinsatak(陳士鐸) is one of famous doctors in Cheong(淸) dynasty. He suggested a creative Oriental medical theory and he did a profound research on Simpo(心包). "Oegyeongmieon(外經微言)" is one of his books recording his oriental medical theory in detail so it is the good documentary record for observing his theory of the Simpo(心包). So we looked into his theory of Simpo(心包) in "Oegyeongmieon(外經微言)" and also referred to his other books. You might be able to get a viewpoint of utilizing Simpo(心包) in several ways through reading this paper.