Dissolved organic carbon(DOC) is the extremely active organic component in terrestrial ecosystem, which plays an important role in the material exchange between pedosphere and others (such as, biosphere, atmosphere, hydrosphere and lithosphere). Compared with the other components of soil organic carbon, DOC is highly sensitive to the changes of soil quality, environmental factors and land use types, so the dynamics and influencing factors of DOC in soils have become one of the hot spots in the fields of the soil, environmental and ecological sciences. In this paper, researches on the factors influencing the dynamics of DOC in soils were reviewed, and the influence mechanisms of factors including biological, non biological and human factors were analyzed. The following conclusions were derived in this paper. Vegetations and microorganisms which belong to biological factors control the input and output of DOC in soils. Non biological and human factors drive the dynamics of DOC by effecting the microbial activity, plant growth and other factors. Biological, non biological and human factors are commonly showed comprehensive action. Based on that, this paper put forward two suggestions for the further researches on the factors influencing the dynamics of DOC in soils, namely, quantitative analysis on the influence intensity of factors by mathematical models and unifying the different methods to determine the content of DOC.