This study is about 'Ji-Qi-Shang-Chong(其氣上衝)' in Shang-han-lun("傷寒論")'s 15th text. Shang-han-lun is a basic text about pathology of Traditional Korean Medicine written by Zhang-Zhong-Jing(張仲景). In that text, there are so many cases of people having some symptoms, how to treat them, and which herb medicine to give them, and the side effects of wrong treatments. In those cases, there is symptom said 'Ji-Qi-Shang-Chong(其氣上衝)' in the 15th text. But there is no detailed description about that. So this study is aimed at studying exactly meaning of the 15th text's 'Ji-Qi-Shang-Chong(其氣上衝)' by comparing historical medical practitioners and analyzing with the bibliography, pathology, herb pharmacology, herbal medicine, pharmacology part. In the bibliographical analysis, this sentence has been transmitted from original Shan-han-lun written by Zhang-Zhong-Jing(張仲景). Former part of this sentence "太陽病, 下之後, 其氣上衝者, 可與桂枝湯". is most correspondent part with Zhong-Jing(仲景)'s. And there is correctional possibility about latter part.