Interstitial lung disease is a complex disease group, and the specific treatment measures developed by experienced physicians are based on a multifactorial consideration of the cause, type and severity of the disease, as well as the patient’s age, all health and medical history, and other coexisting health problems, and such treatment measures are adjusted according to treatment response, drug tolerance, and changes in the condition. Therefore, treatment measures are not identical for each patient. For some interstitial lung diseases with a clear cause, the primary treatment measures are those that target the cause, such as getting out of the dusty environment, giving up pet addiction, and stopping suspicious drugs, etc. After removing the cause, the disease can often be effectively controlled by combining hormone and other treatments if necessary; if the interstitial pulmonary edema is caused by left heart failure, etc., the main focus is on anti-heart failure treatment; if it is related to connective tissue disease, vasculitis, etc. Interstitial pneumonia should be treated mainly for the primary disease, with the control of the primary disease, interstitial fibrosis of the lung can also be improved.