Do not be overly alarmed by fever alone, but observe the disease in isolation at home first, and if it does not improve or even gets worse after 3-5 days, go to the hospital in time. In addition, the main manifestations of pneumonia with novel coronavirus infection are fever, malaise and dry cough. A few patients have symptoms such as nasal congestion, runny nose and diarrhea. Severe cases tend to develop respiratory distress after 1 week, with rapid progression to acute respiratory distress syndrome, septic shock, uncorrectable metabolic acidosis and bleeding and coagulation dysfunction in severe cases. Those with respiratory symptoms, fever, chills, malaise, diarrhea, and conjunctival congestion need prompt medical investigation.