This study was wrriten in order to to help understanding of Kyeolhyung(結洶). Kyeolhyung is a syndrome of epigastric pain and fullness due to accumulation of pathogen in the chest mostly caused by too early purgation of Taiyang(太陽) channel syndrome which leads to the exterior syndrome of heat from the exterior into the interior or combines with the original excessive fluid of the chest. The knotted chest can be divided into large, small, heat and substantice, cold and substantice, water and blood Kyeolhyung. Kyeolhyung is basically treated by purgation but practically it is treated by according to its own symptom and syndromes. And we were cured of the Kyeolhyung discriminating from Zanggyul(藏結) and Bijeung(비증).