The drug treatment of pulmonary fibrosis includes glucocorticoid, immunosuppressant, antifibrotic drug, antacid, anti-infective drug, etc. The use of drugs should be strictly in accordance with the doctor’s prescription. 1. Glucocorticosteroids: the leading drugs for pulmonary fibrosis, including methylprednisolone, prednisone, etc., play a role in controlling inflammation and slowing down the development of the disease. 2. Immunosuppressants: including cyclophosphamide, azathioprine, cyclosporine A, etc., to reduce the body’s immune response, but long-term use of side effects, such as liver function damage, skin rashes and so on. 3. Anti-fibrotic drugs: including pirfenidone, nidanib, N-acetyl cysteine, colchicine, etc. to control inflammation, anti-fibrotic, anti-oxidation, etc., to alleviate the symptoms of the disease. 4. Anti-infective drugs: including cephalosporins, penicillins, tetracyclines, etc. to reduce the symptoms of infection in patients with pulmonary fibrosis. All the drugs should strictly follow the doctor’s instructions, not to increase, decrease or stop using the drugs, patients should quit smoking and alcohol in daily life, keep a good mood, actively cooperate with the doctor’s treatment, and regular review.