Cool-temperate broad-leaved deciduous forests are one of dominant forest cover types in Asia monsoon climate regions. However, our understanding of how much storages carbon in these ecosystems is limited. We studied carbon storage in three cool-temperate broad-leaved deciduous forests at Jirisan National Park, Korea. The biomass of trees in the three stands on an average was $112tC;ha^{-1}$ and ranged from 107 to $119tC;ha^{-1}$. The total amount of soil organic matter at a depth of 30 cm in the three stands on an average was $66tC;ha^{-1}$. In addition, the total carbon stocks of biomass and soil was approximately $178tC;ha^{-1}$, ranged from 167 to $184tC;ha^{-1}$. Above values among three stands did not show the valuable difference at Jirisan National Park. The amounts of carbon storage in three ecosystems at Jirisan National Park, were higher than those of other studies significantly, except Seoraksan National Park.