Whether interstitial lung change is terrible depends mainly on the severity of the disease, the more serious the disease will naturally be more terrible. 1. Interstitial lung disease is a type of lung disease caused by abnormal pathological changes in the interstitium of the lungs, and its causes are very complex and diverse, and it can be divided into idiopathic interstitial pneumonitis, granulomatous lung disease and other interstitial lung diseases and other different types. 2. The prognosis of interstitial lung changes varies significantly depending on the speed of progression and the severity of the disease; for example, idiopathic pulmonary fibrosis ultimately leads to respiratory failure and has a poor overall prognosis, with a five-year survival rate of only 20-40%; interstitial lung changes caused by hypersensitivity pneumonitis are self-limiting in the case of a mild acute exacerbation, so naturally they are not frightening. Individuals who find interstitial lung changes through examination should intervene as early as possible, actively cooperate with their doctors for examination and diagnosis, and follow the doctor’s instructions for standardized treatment.