Accurate calculation and prediction of food freezing process is important for product quality control, device design and energy cost reduction. However, it is a great challenge to find a general method to describe and forecast this process because of its complex mechanism. With the development of computer performance, the application of numerical simulation has gained more and more attention in study of food freezing process. Based on the analysis of food freezing process mechanism，the development of numerical simulation methods and their applicationsin food freezing processes were summarized, so as to provide some guidance for the further research and application of this technology.