The system adopts a distributed bus structure, with one upper computer and one printer managing 5 refrigerator detection lines (45 testing stations per detection line, for a total of 225 testing stations) corresponding to the detection of refrigerator temperature performance parameters at each station. The temperature parameter testing adopts a remote intelligent temperature measurement module, equipped with two temperature sensors, to test the temperature of the freezer and refrigerator compartments respectively; At the same time, determine the number of refrigerator shutdowns, startup time, shutdown time, etc. based on the fluctuation of refrigerator temperature. Set up an environmental temperature detection point on each detection line, and use an intelligent temperature module to detect the environmental temperature; The data collected by each intelligent temperature module is communicated in real-time with the upper computer, processed by the upper computer, displayed in the form of curves and tables, and can be printed at any time. At the same time, data statistics and queries can be performed.