There is no such thing as punctate fibers, which generally refers to punctate and fibrous streaks of increased density. Punctate and fibrillar hyperintensities detected on CT lungs suggest a possible tuberculosis infection and require further testing to rule out tuberculosis. The presence of punctate and fibrillar hyperintense shadows on CT lungs suggests the presence of infected lesions in the lungs, but it is not possible to determine the presence of tuberculosis infection based on the lesions, and further tests are needed to clarify whether the infection is tuberculosis or not. Usually, it is necessary to improve the tuberculin test, blood sedimentation, T-cell test for tuberculosis infection, sputum to find tuberculosis bacilli and other tests, and to find tuberculosis bacilli is the gold standard for confirming the diagnosis of tuberculosis infection. After the diagnosis of TB infection is confirmed, anti-tuberculosis treatment is needed, and the anti-tuberculosis treatment period is long, usually around 6 months. During the period of anti-tuberculosis treatment, it is necessary to periodically review the changes of lung CT on an outpatient basis to observe whether the lung lesions have improved and disappeared, and to adjust the treatment in time.