Taking coal gangue mountain of Panyi coal mine in Huainan mining area as the study object, through the analysis of physicochemical properties, scanning electron microscope(SEM), energy dispersive spectrometry(EDS), total organic carbon(TOC) contents of weathered coal gangue, the authors preliminarily studied the distribution and release of organic carbon from weathered coal gangue, and the content of dissolved organic carbon(DOC) in soil, which was affected by accumulation and eluviation of coal gangue mountain. The results showed that the contents of TOC in weathered coal gangue decreased from the top of mountain to the mountainside, and to the foot, and with the increasing depth of sampling, the contents became higher. The contents of TOC in weathered coal gangue was positively related with the particle size, and negatively related with the weathering degree of weathered coal gangue. With the increase of time of leaching time, the soluble amounts of DOC leached from weathered coal gangue of different particle size reduced. In the 96 hours leachate, the soluble amounts of DOC tended to be stable, and the values were comparatively similar. Within the distance of 2~100 m to the foot of coal gangue mountain, the increasing distance of sampling, the contents of DOC in soil tended to decrease, and within the distance of 80~100 m to coal gangue mountain, the contents of DOC in soil were similar to that in normal farmland.