It is possible to eat with patients who have been cured of neocoronavirus and usually no cross-infection will occur because they will not continue to excrete the novel coronavirus after being cured and therefore will not be clinically infected. The main clinical sources of cross-infection are patients with incubation-phase novel coronavirus infection or patients who are developing novel coronavirus infection. The above-mentioned groups should be strictly isolated and given active treatment to avoid contact with patients with novel coronavirus infection who may be in the incubation phase or develop the disease. In times of heavy epidemics, it is also important to avoid places where people gather and to wear effective masks when going out.