The hazards of interstitial lung disease are as follows: 1, leading to a decline in respiratory function, due to long-term hypoxia, which will affect the gas exchange of the lungs, resulting in increased dyspnea; 2, causing circulatory disorders, repeated episodes can lead to pulmonary heart disease, renal function damage. There are many causes of interstitial lung disease, including physical and chemical factors, drugs, immune factors and so on. Interstitial pneumonia will appear cough, cough sputum, dyspnea, dyspnea belongs to the progressive dyspnea, confirm the diagnosis depends on chest CT. interstitial lung disease develops to the advanced stage, it will lead to heart failure, respiratory failure and pulmonary arterial hypertension, which will jeopardize the patient’s life.