Postoperative fibrous foci of pulmonary nodules are treated with medication and nursing care under the direction of a doctor. 1. Drug treatment: pulmonary nodules are usually granulation tissue proliferation in the lungs with localized density relatively high compared to the lung tissue. Postoperative fibrous foci of pulmonary nodules can be treated with drugs such as pirfenidone and nidanib under the guidance of doctors. After use, patients may experience symptoms such as facial swelling and laryngeal edema, and the drug is contraindicated in patients who are allergic to any component of the product. 2. Nursing treatment: postoperative patients should strengthen physical exercise, improve their immunity, prevent influenza and pneumonia. Eat some high protein food, keep enough rest, forbid spicy and stimulating food, do not smoke and drink. Patients should go to the hospital, under the guidance of the doctor for treatment.