Interstitial pneumonia can be treated with glucocorticoids, immunosuppressants, and antifibrotic drugs under medical supervision. 1. Glucocorticoid: It can inhibit inflammation and immune process and relieve symptoms. Common drugs include dexamethasone. Adverse effects such as bradycardia, hypertension and hyperglycemia may occur after use. It is prohibited for those who are allergic to dexamethasone. 2. Immunosuppressants: help to slow down the disease. Common drugs include azathioprine, which may cause allergic reactions and leukopenia after use. Allergic to azathioprine is prohibited, pregnant women are prohibited. 3. Anti-fibrosis drugs: can slow down the progress of the disease. Common drugs include pirfenidone, after the use of nausea, vomiting, skin rash and other adverse reactions. People who are allergic to pirfenidone are prohibited, and people with severe renal dysfunction are prohibited. Patients diagnosed with interstitial pneumonitis are advised to visit a hospital for prompt treatment.