Children are the key health care population for the prevention and control of COVID-19, but their own basic knowledge of COVID-19 infection is generally insufficient. How should we further strengthen publicity and education? Chang Zhaorui, a researcher from the Communication and Prevention Division of the Chinese Center for Disease Control and Prevention, said that this requires multi sectoral and multi-channel publicity of COVID-19's popular science knowledge. First, in terms of publicity objects, we should strengthen the publicity of prevention and control knowledge to teachers, parents and caregivers while promoting prevention and control knowledge to children; Second, in terms of publicity methods, children's songs, cartoons and books are easily accepted and interested by children; Third, in terms of propaganda content, targeted at children of different ages, the content should be targeted, and the language and words that children of corresponding ages can understand and read should be used for propaganda; The fourth is to carry out the science popularization of COVID-19 prevention and control knowledge by going into the classroom, using teacher explanation, playing games, role playing and other educational methods. Chang Zhaorui pointed out that parents' words and deeds are the best education for children. In terms of improving children's personal protection awareness, first, parents should teach children to do well in protection and maintain good health habits; Second, parents should set an example, wash their hands in time when entering the house, and cover their mouth and nose when coughing; Third, we should formulate rules such as reasonable diet, regular work and rest, and proper exercise; Fourth, praise and encourage children's good behavior in time. The elderly are also the key population for the prevention and control of COVID-19. Li Yanming, director of the Department of Respiratory and Critical Care Medicine of Beijing Hospital, said that compared with urban areas, some elderly people in rural areas still lack the basic knowledge of COVID-19 infection, so it is more necessary to carry out science popularization and education in multiple departments and channels. Li Yanming stressed that there are several points to be paid attention to in the process of propaganda and education: first, in terms of form, it is better to use the language that can be understood and accepted by the rural elderly, and use more pictures and less words; Second, in terms of content, on the basis of scientific nature, we should also pay attention to the most concerned problems in the daily life of rural elderly friends, so that they can find answers in them; Third, in terms of objects, in addition to the elderly people in rural areas, we should also pay attention to let the neighbors and children around him know about COVID-19 knowledge at the same time; Fourth, in terms of content, we should not only tell the elderly what they need to do, but also what they can't do. Li Yanming pointed out that the majority of rural doctors are the focus of rural prevention and control, and also the main force of rural prevention and control. They are very familiar with the basic diseases and basic conditions of rural people, and believe they can provide very good guidance. (Outlook New Era)