Novel coronavirus infections are lethal. Now many places have found cases of death, the specific lethality is not exact, but still in a preventable and controllable state. To reduce novel coronavirus infection, we should go out less, wash hands more often, keep the living room and workplace clean, ventilate more, drink more water, pay more attention to rest, exercise properly, and improve individual immunity. Pay attention to nutrition, reasonable diet, poultry and eggs should be fully cooked before consumption. Pay attention to monitoring body temperature, and seek medical attention promptly if there are symptoms such as fever, malaise and cough. Take the initiative to isolate if you live in an infected area or have a history of contact with confirmed or suspected patients two weeks before the onset of the disease.