Fibrotic foci in the upper lobes of both lungs usually suggest that chronic lung infections have occurred in the upper lobes of both lungs, especially infections with tuberculosis as the main cause. Tuberculosis is easy to leave behind fibers, proliferation, calcification, pleural thickening and other imaging changes in the course of treatment, and fibrotic foci, once they appear, indicate that the foci tend to be obsolete, and no longer need to continue anti-tuberculosis treatment. Fibrous foci in the upper lobes of both lungs can also be seen in people who have been smoking for a long time and working with dust, including masons and coal miners, etc. Chest CT can indicate fibrous foci in both upper lobes of the lungs. Fibrotic foci in the upper lobes of both lungs are mostly old and do not need special treatment. They may be accompanied by symptoms such as cough and sputum, which can be treated with traditional Chinese medicine and western medicine, and do not require hospitalization. Fibrotic foci itself is an old manifestation, does not have special clinical significance, dynamic observation of chest CT can be.