In order to prevent and control the spread of cold chain food in COVID-19 more scientifically and accurately, the National Health and Wellness Commission revised the above guidelines. The main revision contents are: according to the prevention and control measures of risk differentiation, further clarify the high-risk post population and prevention and control requirements (porters and loaders in key places such as centralized storage and turnover of imported cold chain food are high-risk population), and adjust disinfection measures to make the disinfection method more scientific. The revised guide is more scientific and accurate.