以微型分置式制冷机为研究对象， 采用节点分析法， 数值模拟了制冷机内部的交变流动和换热过程， 得出其内部压力、温度、流速等参数的动态变化规律。计算结果与实验结果进行了比较， 压力参数、示功图均能较好地吻合。程序采用模块化结构， 具有一定的通用性。该程序为微型斯特林制冷机的工程化应用研究提供了合理的设计依据。 Taking the micro-type refrigerator as the research object, the nodal analysis method was used to simulate the alternating flow and heat transfer inside the refrigerator numerically. The dynamic changes of the internal pressure, temperature and flow rate were obtained. The calculated results are compared with the experimental results, and the pressure parameters and the Kinetic chart are well matched. The program uses a modular structure, has a certain versatility. The program provides a reasonable design basis for the engineering research of micro Stirling refrigerator.