The epidemiological contact history, clinical symptoms, and ancillary tests can be used to identify colds and novel pneumonia, as follows: 1. Contact history: Patients with novel pneumonia generally have a history of epidemiological contact with patients with suspected or confirmed novel pneumonia in the recent past, while patients with the common cold generally have no history of epidemiological contact; 2. New pneumonia patients with severe clinical symptoms, and even respiratory distress, coma and life-threatening; 3, auxiliary tests: auxiliary tests can clearly identify whether the new pneumonia, the most important test is the new coronavirus nucleic acid test, patients with the common cold new coronavirus nucleic acid test is negative, while patients with new pneumonia new coronavirus nucleic acid test is positive.