This study is focus on the dynamics of DOC in Takayama forest. The DOC concentrations and fluxes were highest in litter leachate (25.62 mg C L-1, 334.9 kg C ha-1yr-1, respectively), then significantly decreased in the soil solution and stream water (7.01 mg C L-1, 1.77mg C L-1, respectively). It indicated the strongly efficient retention in the mineral soil through adsorption or decomposition. The DOC flux was hydrologically controlled. DOC flux of litter leachate (334.9 C kg ha-1 yr-1) are in the upper range of those reported from other temperate forest ecosystems (100-400 kg C ha-1yr-1), abundant annual precipitation (2550mm) and the large input of litterfall (2300 kg C ha-1yr-1) were the main contributions to it. The study of fluxes of DOC fill the vacancy of the vegetation characteristics (i.e. Canopy exchange, tree species, and bark morphology) and hydrology (large amount of precipitation) contribute to the carbon cycling in this study site. Contrast to the other elements contribute to carbon cycling, the input of DOC flux was not so significant. However, the flux of DOC is regulated more by abiotic-biotic linkages and by direct abiotic processes, it remarkably relates to the rapid flux of water through the whole forest system.