Abstract
This study was carried out to investigate the dose of prescription in Shanghanlun. To this end, literature research and a survey of several herbal medicines have been done. As a result, the weight of 1 liang (兩) is determined to be about 15g. Furthermore, we find that Jung-Kyung Jang, who compiled Shang-hanlun, used a great quantity of herbal medicines to treat critical conditions of iIInesses. Therefore application of Shang-hanIun s prescriptions according to the various conditions of patients must have changed the quantity of dosage.