Abstract: Castanea crenata, known as Korean chestnut has been used as a cosmetic material due to its anti-wrinkle and anti-aging effects. Artemisia capillaris is well known as famous Traditional Chinese Medicine (TCM) for treating acute and chronic hepatitis in China. In this study, the leaves of C. crenata and A. capillaris were applied as natural dyes. In addition, the color patterns were compared by the pre-mordanting, that is onchrome to silk fabric. Silk fabric was shown colors close to white by A. capillaris without any mordant and with sodium tartrate plus citric acid. Interestingly, iron (II) sulfate and potassium dichromate induced green as compared with other mordants inducing yellow or white. The composition of iron could induce very different color changes. This study would be useful to obtain color changes by the leaves of C. crenata and A. capillaris for some materials, e.g., cotton. Further study will be processed to evaluate them as a biological usage.