Abstract: Freezing is recognized as one of the most important technology in food preservation,which is in keeping with contemporary three requirements of green,convenience,health care,and the quality of frozen food is closely related to the performance of equipment.The classification and characteristics of the equipment were introduced,then the three factors affecting equipment performance,such as energy consumption,air distribution,and freezing time,were proposed,which were also needed to be considered for equipment design. The physical properties of time-varying and modeling accuracy of food( digital image) should be considered when the numerical simulation in food freezing process was carried out,to obtain a more accurate numerical results. Numerical simulation and optimization of automatic control are effective optimizing means of quick freezing equipment development.