Benign pulmonary fibrous nodule foci of 3.2mm are generally mild and not serious, and if they are 3.2cm, they are more serious. Lung fibrotic nodules may be due to bacterial infection, tuberculosis infection, chronic inflammation and other reasons, generally benign pulmonary fibrotic nodules foci are small, clinical symptoms are not obvious patients may cough, chest tightness and other symptoms. Benign 3.2mm pulmonary fibrous nodules generally do not require treatment, and patients need to undergo regular review. If the benign fibrous nodule of 3.2cm may affect lung function, easily cause lung inflammation, there is also the possibility of malignant changes, it is recommended that the patient’s condition according to a comprehensive assessment of the appropriate treatment method. Usually should pay attention to develop good living habits, prohibit staying up late, quit smoking and drinking, wear masks to reduce dust inhalation, prohibit engaging in dust pollution work, moderate exercise to improve immunity, more contact with nature to breathe fresh air. It is recommended that patients go to the hospital in a timely manner and undergo regular checkups.