The studies of the global change and the sustainable development are the two principal themes in the current geoscience researches. The terrestrial ecosystem has great significance in global change. Many of the terrestrial carbon reserves are stored in the freezing regions. However, the carbon in these regions is particularly sensitive to the global warming. Therefore it can play one of the important indicators of the climate change. As a result, the research of the soil freeze-thawing process in freezing regions and its relationship with the terrestrial ecosystem carbon cycle is significant to the global change research. In this paper, the mechanism of the interactions between freeze-thawing process and ecosystem carbon cycle were summarized. The advances in the carbon cycle modeling were introduced and the mayor existing problems were analyzed. Meanwhile, the future research trends between freeze-thawing process and carbon cycle were put forward. In addition, a case study of the impact of the carbon cycle model considering of the freeze-thawing process on the improvement of simulation accuracy was illustrated.