In answering questions about the treatment of interstitial pneumonia, it is important to define the concept of interstitial pneumonia, as I did in answering the question, “What are the main symptoms of interstitial pneumonia?” As I said in my answer to the question “What are the main symptoms of interstitial pneumonia?”, the concept of interstitial pneumonia, as most people refer to it, is the general term “diffuse parenchymal lung disease” or “interstitial lung disease” or “diffuse lung disease”; this concept encompasses about 200 diseases. This concept encompasses about 200 diseases, so it is difficult to answer the question of treatment. In order to answer this question, the only way to answer it is to limit the concept to “idiopathic interstitial pneumonia,” and even then, it includes several types. According to the current research progress: 1. IPF is a type of pulmonary fibrosis: the only drugs approved by the FDA for treatment are “pirfenidone” and “nidanib”; only pirfenidone is currently available in our country, and the diagnosis of IPF is Patients with a diagnosis of IPF should pay attention to the general knowledge of the disease before using the drugs, because the effect of these drugs is only to slow down the rate of progression of the disease. 2, non-specific interstitial pneumonia: because it contains three pathological types, namely cellular, fibrotic and mixed, for patients with fibrotic type, trial of pirfenidone, as in the treatment of IPF, and for the other two types of disease, trial of hormones, such as prednisone, pay attention to review CT to understand whether there is improvement and decide whether to continue the trial. 3, mechanized pneumonia: this type has a better prognosis, hormone therapy is the first choice, most patients (about 80% of more) patients hormone effective, but treatment with special attention to relapse. The diagnosis must be clear before treatment, and the pathology must be characterized by “Masone bodies” filling the alveolar cavity, or distal bronchi. 4, acute interstitial pneumonia: this type has a high mortality rate, and treatment is similar to that of acute lung injury, requiring comprehensive treatment, including mechanical ventilation. 5, desquamative interstitial pneumonia and respiratory fine bronchitis with interstitial lung disease: most of these two types are related to smoking, smoking cessation is the first, some patients can recover after quitting smoking, and some patients can be given hormone therapy while quitting smoking. People with significant chest tightness and shortness of breath can be given inhaled preparations such as Cetropium bromide in accordance with COPD. 6, lymphocytic interstitial pneumonia: overall hormone therapy is more effective, and the diagnosis must be clear before treatment. There are also rare types, such as acute fibrinoid mechanized pneumonia, treatment can refer to mechanized pneumonia; idiopathic pulmonary pleural elastosis and airway-centered interstitial lung disease is a new type of disease, there is no treatment specification, can consider referring to IPF treatment.