The inhibition effect of Panax notoginseng on novel coronavirus is limited to in vitro studies, but the in vitro studies are not equivalent to the effect of the drug in humans. Because in vitro studies are done with animal or human cells, but the reaction of the drug after entering the body is not exactly the same as in vitro, so it cannot be used as a preventive drug against the new coronavirus, and there is no good drug to prevent the new coronavirus. The best way is to improve their own resistance, increase nutrition, proper rest, regular diet, maintain a relaxed mood, appropriate exercise, so that the immune system is in a relatively normal state is the best defense barrier against the virus.