The vaccination of COVID-19, a 3-11 year old population, is an important part of building the immune barrier of the whole population. Vaccination for people aged 3-11 needs to be actively and steadily promoted in accordance with the principle of informed consent and voluntariness. All relevant departments shall strengthen coordination and linkage, establish a medical treatment guarantee mechanism for abnormal reactions, and the vaccination points shall have pediatric emergency first aid personnel, children's emergency medicine guarantee, etc. To actively and steadily promote the vaccination work of COVID-19 at the age of 3-11, we need to guide communication, which requires humanistic care and needs temperature. The joint prevention and control mechanism of the State Council held a press conference on October 30. Wu Liangyou, deputy director of the Bureau of disease control of the National Health Commission, said that he would actively guide the school-age non taboo people aged 3 to 11 to "take it all", and strive to complete the whole vaccination of this age group by the end of December. As of October 29th, the national total of 2 billion 262 million doses of COVID-19 vaccine was reported, and the total number of vaccinations completed was 1 billion 70 million. At present, China has adjusted the target population of Xinguan vaccine from over 12 years old to over 3 years old. Recently, including Beijing, the country has launched more than 3-11 year old crowd of COVID-19 vaccination work. Mentougou District education system took the lead in launching vaccination for relevant people in the city in accordance with the principle of "receiving as much as possible". Daxing District's education system will try to carry out this work in some towns. Haidian District's primary school students and kindergarten children (over three years old) will start vaccination on November 1. The rapid start of COVID-19 vaccination for low school students will help build a strong immune barrier and raise the level of epidemic prevention and control in Beijing and the whole country. For the full start of the 3-11 year old crowd COVID-19 vaccination work, some parents think very timely, but also some parents have concerns. In fact, at the present stage, several COVID-19 inactivated vaccines that can be vaccinated in children of 3-11 years old are safe. In the early days, our country had inoculated COVID-19 vaccine for people over 12 years old, and on this basis, accelerated the related research on the use of COVID-19 vaccine in the 3-11 year old crowd. Clinical trials show that 3-11 year old children have the same safety and immunogenicity as COVID-19 vaccine, that is to say, children vaccinated with COVID-19 vaccine is safe and effective. Vaccination with COVID-19 is the most effective way to prevent COVID-19 infection, especially for severe cases. Some people believe that the previous data show that there are few cases of confirmed severe disease in children, so they question the necessity of vaccinating children with new crown vaccine. In fact, as the epidemic continues to develop and the delta mutant is rampant, the past cognition needs to be changed. The incidence rate of children is relatively low in the early stage of outbreak. However, with the spread and prevalence of the epidemic, it can be seen in some countries that the incidence of children is close to the incidence of adult disease at the end of last year. Moreover, judging from the development of epidemic situation in foreign countries, severe cases and deaths of newly diagnosed children occur from time to time, which has exceeded the epidemic level of influenza in some countries. The vaccination of COVID-19, a 3-11 year old population, is an important part of building the immune barrier of the whole population. Schools and kindergartens are densely populated, which is easy to cause local transmission and epidemic of infectious diseases. In the epidemic in Putian, Fujian Province in September this year, the cases of students aged 14 and below accounted for more than 40% of the total confirmed cases, which shows that schools have become a weak link in epidemic prevention and control. Vaccination to establish mass immunization is to reduce or block the epidemic of diseases through mass immunization. Children are an important part of the population. Vaccination is necessary. To vaccinate people at the age of 3-11 is an important measure to block the spread of COVID-19. Vaccination for people aged 3-11 needs to be actively and steadily promoted in accordance with the principle of informed consent and voluntariness. Parents should understand the vaccine knowledge and vaccination process before children are vaccinated with the new crown vaccine. At the scene, the current health status and past vaccination contraindications of their children shall be truthfully provided, and the vaccination doctor shall make judgment. In particular, it should be emphasized that since children aged 3-11 are the main population for vaccination, other immunization planning vaccines or non immunization planning vaccines may be vaccinated in the relevant process. The requirement that the interval between Xinguan vaccine and other vaccines be more than 14 days must be implemented. Ensuring the safety of vaccinated students is the premise of promoting the "should receive" work of young people. Relevant parties should strengthen communication with recipients and guardians, cooperate with pre vaccination preparation, care during vaccination, post vaccination observation and timely reporting of adverse reactions, so as to ensure full coverage of guardians of school-age groups. All relevant departments shall strengthen coordination and linkage, establish a medical treatment guarantee mechanism for abnormal reactions, and the vaccination points shall have pediatric emergency first aid personnel, children's emergency medicine guarantee, etc. To actively and steadily promote the vaccination work of COVID-19 at the age of 3-11, we need to guide communication, which requires humanistic care and needs temperature. (outlook new era)