Novel pneumonia should be referred to as neo-coronavirus pneumonia, which is differentiated from cold mainly by lung CT, neo-coronavirus nucleic acid test, neo-coronavirus antibodies and other related tests. Patients with common cold rarely show interstitial changes in lung CT, nucleic acid test for new coronavirus is negative several times, and also negative for antibodies to new coronavirus. In contrast, the first week of New Coronavirus pneumonia is similar to the cold and can be easily misdiagnosed, but after a week the symptoms begin to significantly worsen, such as cough and fever than the original degree of aggravation, and some patients with severe disease and even shortness of breath after activity critical patients can develop respiratory distress, impaired consciousness, and may need to enter the intensive care unit for treatment, while the common cold usually begins to significantly improve in 5-7 days, if the symptoms still worsen in 5-7 days, you need to go to the hospital to ask the doctor If the symptoms still worsen in 5-7 days, you need to go to the hospital and ask your doctor to evaluate to exclude new coronary pneumonia. Patients with New Coronavirus pneumonia tend to have interstitial changes on lung CT, a positive nucleic acid test for New Coronavirus, and positive antibodies to New Coronavirus. Patients with the common cold generally have no history of epidemiologic exposure, whereas patients with novel pneumonia generally have a history of epidemiologic exposure.