Part of the cold can lead to the formation of pneumonia, the cold is mostly caused by viral infections, if early not actively and effectively symptomatic treatment, the disease can further progress to the formation of lower respiratory tract infection, which leads to the formation of pneumonia, especially the cold caused by influenza virus infection, can form the primary viral pneumonia or combined with bacterial pneumonia, so that the cough, cough symptoms significantly aggravated and appear chills, fever and other symptoms. Fever and other symptoms. In this case, it is necessary to improve the chest X-ray or CT examination, blood tests, etc. to clarify the diagnosis and give early anti-infection treatment accordingly. In addition, the recent outbreak of novel coronavirus pneumonia may have symptoms similar to those of a cold, such as nasal congestion, sneezing, watery eyes, sore throat, muscle aches and diarrhea, but the disease is caused by novel coronavirus infection, which is relatively serious and infectious, and needs to be differentiated early, especially in patients with epidemiological history. In particular, patients with an epidemiological history should have their blood tests, chest CT and nucleic acid tests for novel coronavirus in respiratory specimens.