Interstitial inflammation of both lungs is not necessarily serious and depends mainly on factors such as underlying etiology, extent of involvement, and complications. 1. The underlying cause is the main evaluation criterion, such as inhalation of dust, interferon and other drugs, systemic lupus erythematosus and other immune system diseases, is more serious; smoking and other causes are relatively mild. 2. Scope of involvement, interstitial pneumonia affects most of the tissues of both lungs, often with significant impairment of lung function, and the condition is more serious; the smaller the scope, the lower the degree of severity. 3. Complications, such as the combination of pulmonary heart disease, pulmonary hypertension, respiratory failure and other complications, serious cases may be life-threatening due to respiratory failure rescue is not timely, pulmonary heart disease can also cause heart failure and other manifestations. Therefore, it is necessary to consult a doctor in time, subject to the doctor’s recommendations, under the guidance of the doctor.