Diarrhea is defined as having more than 3 bowel movements a day, with loose, watery stools. After infection with novel coronavirus pneumonia, some people will have digestive symptoms such as nausea, vomiting, abdominal distension, abdominal pain, and some people will have diarrhea, which is not very different from diarrhea caused by other diseases, so it is not possible to diagnose or exclude novel coronavirus pneumonia from the symptoms. It is only based on the patient’s nucleic acid test and chest imaging that it can be determined whether or not the patient is infected with novel coronavirus pneumonia.