The difference between CT of pneumonia and tuberculosis usually refers to the difference in imaging signs, and the difference between the two lies in the different imaging characteristics shown, as follows: 1. Pneumonia: the imaging signs can be different according to the type of pneumonia. Lobar pneumonia is mainly characterized by solid shadows in the lobes or segments of the lungs, and progresses at a faster rate. Lobular pneumonia is characterized by irregular patchy shadows with shallow and blurred edges, no solid changes, and bilateral lower lobe involvement. Interstitial pneumonia often manifests as irregular shadows in both lower lungs, which are in the form of ground glass or lattice, during which there may be small patches of atelectasis. 2. Tuberculosis: Primary syndrome of tuberculosis, manifesting as enlarged lymph nodes in the hilar and mediastinal regions of the lungs. Acute hematogenous tuberculosis, manifested by multiple, evenly distributed, uniformly dense, uniformly sized, corn-like shadows in the lung fields, traveling along the blood vessels. Subacute and chronic hematogenous disseminated tuberculosis, the main manifestation of the main corn grain lesions, interspersed with patchy, nodular, cords and stripes of shadows. The difference between pneumonia and tuberculosis CT films should be judged by a professional doctor, and it is not recommended for patients to interpret on their own.