Interstitial pneumonitis advanced manifestations, dyspnea progressive aggravation, the serious ones can continue to progress, and ultimately lead to respiratory failure, multi-organ failure and even death. 1. Interstitial fibrosis is usually irreversible and can lose its normal function. In the advanced stage of interstitial pneumonia, diffuse interstitial fibrosis and severe dyspnea may develop. 2. A feeling of suffocation may be experienced after mild activity, and a prolonged period of hypoxia may result in pestle and mortar fingers. There may be respiratory distress syndrome, type I respiratory failure. 3. Systemic symptoms, such as heart failure and liver and renal impairment, etc., and multi-organ failure and death in the terminal stage. Interstitial pneumonia, it is recommended to go to the regular hospital, need to specialists to clearly diagnose and guide the treatment. To avoid delays.