The utility model relates to a temperature recording means, which comprises a casing, a temperature sensor arranged on the outer surface of the casing, and an analog to digital converter, an SCM and an interface which are arranged in the casing. While in use, the temperature recording means is put into the refrigeration food and the chilled food, and the SCM samples the temperature value according to the set time interval, and stores the temperature value at the current time. The utility model has the simple structure, and can be used for make the time record on the temperature variation in the course of transporting the refrigeration aquatic products, refrigeration aquatic products, and refrigeration food products. The utility model can judge the food fresh keeping degree and identifies the responsible accident. The utility model can be used for recording and displaying the refrigerating temperature of the open-shelf and the goods shelf in the supermarket or the refrigerator.