The increase of fibrous foci in the lower lobe of the lung belongs to a kind of change in the process of reviewing lung CT, and whether treatment is needed needs to be judged in combination with the clinical symptoms, which can be continued to be reviewed without any discomfort without treatment; accompanied by obvious cough, chest pain, shortness of breath and other manifestations, which need to be further treated. 1. Although some patients have an increase in fibrous foci, they are still suffering from chronic inflammation, and there is no obvious discomfort, so there is no need for excessive intervention. 2. The appearance of obvious pulmonary symptoms, may belong to the active stage of inflammation, the corresponding condition requires further treatment. If the symptoms are caused by infection, anti-inflammatory drugs, such as moxifloxacin, can be applied; immune system factors can be applied to hormonal drugs, such as hydrocortisone. Fibrous foci in the lower lobes of the lungs are more frequent than before, accompanied by obvious pulmonary symptoms, which require timely medical observation, diagnosis of the cause of the disease through examination, and standardized treatment under the guidance of clinicians to avoid delays in the condition.