Interstitial lung changes are an imaging change, but interstitial lung changes are not necessarily interstitial pneumonia. 1. Interstitial lung changes are an imaging diagnosis, a pathological change in the lungs, usually visible on chest CT, which may show fibrous cords or lattice and honeycomb shadows. 2. Interstitial pneumonitis is an interstitial lung disease characterized by inflammation and pulmonary fibrosis, mainly caused by fibrosis after damage to the interstitium of the lungs, and its main manifestation is progressively aggravating dyspnea, and in some patients, it is accompanied by symptoms such as coughing, malaise, fever, chest pain, and so on. Interstitial changes in the lungs are not necessarily interstitial pneumonia, these two are two different concepts, but interstitial pneumonia may appear interstitial changes in the lungs. It is recommended that patients seek timely medical examination to clarify the cause of the disease and then carry out targeted treatment, maintain a good state of mind in life, regular follow-up, and seek timely medical attention if there is any abnormality.