[Objective] The distribution characteristics of soil organic carbon (SOC) content and density (SOCD) in typical forests of Bailongjiang region were studied in order to provide a scientific basis for further promoting multi-objective forest management.[Methods] Field investigation, sampling and laboratory test were used.[Results] ① The mean SOC content of artificial spruce forest was (32.5±21.82) g/kg, and SOCD was (13.85±6.98) kg/m² in the soil depth of 0-60 cm. ② The density of soil is significantly different in the different soil depths, and the content of soil organic matter, total N, total P, total K, effective P and K in five forest types showed a trend of decline with the increase of soil depth. ③ Content of soil in 0-60 cm layer was positively correlated with natural water content, total N, total K and effective K, while it had a significantly negative correlation with soil density. SOCD showed a consistent correlation with physicochemical properties of soil.[Conclusion] The content and density of SOC in the different forest types are affected by many factors in the study area. Under the influence of those factors such as stand structure, soil physical and chemical characteristics, and tree characteristics, the content and density of SOC showed a significant difference between the different forest types.