Both tuberculosis and novel coronavirus pneumonia have lesions in the lungs, can be transmitted by droplets, also have symptoms of cough and fever, and are both infectious diseases. The differences are as follows: 1. The etiology of tuberculosis is different: the etiology of tuberculosis is bacterial, a chronic infectious disease caused by infection with Mycobacterium tuberculosis, while the etiology of new coronavirus pneumonia is viral, i.e., new coronavirus, an acute infectious disease. 2. The incubation period of the new coronavirus is up to 24 days, and it can be cured and discharged from the hospital and isolated for 14 days. 4. The diagnosis of pulmonary tuberculosis can be made by bacterial culture or general chest radiographs, such as primary tuberculosis, coronary tuberculosis, and tuberculosis cavity can be diagnosed by imaging. In contrast, the diagnosis of novel coronavirus pneumonia is made by nucleic acid testing and gene sequencing, and lung CT has signs of specific viral infection, which is difficult to diagnose by general chest radiographs.