[Objective] The objective of this study is to research the variation of soil humus carbon content of Carya cathayensis(Chinese hickory) forest after intensive management, in order to provide theoretical basis for soil management in the forest. [Methods] Based on the long-term investigation, we collected the soil samples from forests that were intensively-managed for 5, 10, 15, and 20 years, respectively. We then analyzed the soil humus of the intensively-managed forests(IMF), and compared with the evergreen and deciduous broadleaf forest(EDBF). [Results] The variation of soil humus carbon content mainly occurred in the surface soil. Soil humus including humic acid carbon(HAC), fulvic acid carbon(FAC), and humin acid carbon(HMC) decreased as an EDBE were converted to an IMF. Compared to the EDBF, there was a decrease in HAC(42.8%), FAC(23.9%), and HMC(21.2%) in the Chinese hickory forests after a 5-year of intensive management. After a 20-year intensive management, HAC, FAC, HMC were decreased by 45.3%, 39.0% and 32.3%, respectively. As to the sub-surface, after 20 years, HMC increased by 94.2%. [Conclusion] Intensive management reduced the content of the soil humic acid and fulvic acid carbon at surface and sub-surface soil.