Diarrhea is mostly unrelated to novel pneumonia. If there is only diarrhea without upper respiratory symptoms such as fever and dry cough, it is not related to novel pneumonia. If there is a history of travel to the infected area or contact with related people in the infected area within 14 days before the onset of the disease, and diarrhea symptoms are accompanied by upper respiratory symptoms such as fever, cough, and sputum, there is a possibility of contracting novel pneumonia. At present, novel pneumonia is mainly manifested by fever, malaise and dry cough. A few patients may have cold symptoms such as diarrhea, nasal congestion and runny nose, and severe patients may have difficulty in breathing.