Dense nodules in the lower lobe of the lungs need to be clearly identified as the cause of the disease. Commonly, there are tuberculosis, lung tumors and lung infections, which can be treated with medication, surgery, radiotherapy and so on. 1. Drug treatment: if the patient is due to tuberculosis and other causes of high density nodules, you can use anti-tuberculosis drugs, such as isoniazid tablets, rifampicin capsules and other drugs to treat. If the patient is due to bacterial lesions, you can use cefixime capsules and other drugs to treat. 2. Surgery: For non-small cell lung cancer and benign tumors with large size, surgical resection is recommended. After lung cancer resection, according to the pathological results, it is decided whether to carry out radiotherapy or not, and benign tumors should be resected at an early stage to prevent malignant changes. 3. Radiotherapy: high-density nodules in the lower lobe of lungs may be small cell lung cancer, which is not easy to be found in the early stage and is sensitive to radiotherapy and chemotherapy. It is recommended to consult doctor in time when discovering high-density nodules in lower lobe of lungs, follow doctor’s prescription in daily life, avoid spicy and stimulating food, and consult doctor in time when abnormal situation occurs.