At the beginning of this year, a new type of coronary pneumonia suddenly appeared in China. At the beginning, the epidemic broke out in a large area and the number of cases surged day by day. Overloaded hospitals still failed to resist this fierce challenge. At this time, Academician Zhang Boli and the Department of Epidemic Prevention and Control visited and observed these hospitals. They found that the hospital was overcrowded at that time, with long queues for registration, crowded consultation rooms and full laboratories, making it difficult for critically ill patients to find wards. Some patients even stayed in the hospital for a long time and could not be placed. This situation is very bad for COVID-19, because it is easily infected. At this time, Academician Zhang Boli worried that such problems should be solved in time, otherwise it would aggravate the development of the epidemic. On the night of the visit, Academician Zhang Boli proposed at the conference on epidemic prevention and control that patients with different situations should be treated in different categories, patients with severe diseases and mild diseases should be treated in isolation, and close contacts and suspected cases should be isolated, and then treated according to the situation after the results are determined. In addition, Academician Zhang Boli proposed to requisition hotels, dormitories and other resources at the initial stage of the epidemic to solve the problem of insufficient isolation space in hospitals, and also developed Chinese medicines for patients to take. After taking the medicine, the condition of some patients improved obviously. The Medal of People's Heroes is an honor that Academician Zhang Boli deserves. His contribution to the people cannot be calculated by numbers. Such an excellent scientist is worth learning.