There have been some phenomena, such as the blocking of cold chain food logistics information and the nonstandard safety standards of cold chain food. According to the information of the query reference network, due to technical and cost reasons, the supervision accuracy of cold chain food in China's food industry during the epidemic period was not strong, and there were phenomena such as the blocking of cold chain food logistics information and the lack of standardized safety standards for cold chain food, which led to the subsequent positive cases of imported cold chain food.