According to epidemiological surveys, any population is susceptible to novel coronavirus infection, and people are not resistant to novel coronavirus, which leads to novel coronavirus infection in any age group. Once infected with a novel coronavirus, most patients can develop novel pneumonia. According to the current survey, young and middle-aged people are mainly affected by the novel coronavirus, and the disease is more serious in elderly patients who are infected with the novel coronavirus, which can easily lead to multiple organ damage or failure, or even death, and the morbidity and mortality rate is relatively high. Infants and young children have a lower incidence of the disease, mostly because they have less communication with the outside world and rarely go out. Pregnant women are also a high-risk group, so any group of people should strengthen the corresponding protection, especially infants, pregnant women, the elderly and other special groups.