Striated lattice-like changes under the pleura of both lungs may be due to interstitial lung disease, connective tissue disease, vasculitis, etc. 1. Interstitial lung disease: also known as diffuse interstitial fibrosis, this disease usually appears on the report card of lung imaging, such as CT or chest radiographs, and if there is a grid-like change in both lungs, it will be described as the lungs are in the form of a mesh. 2. Connective tissue disease: connective tissue disease is a multi-system disease, and the lungs are the most commonly involved organs. The imaging changes are interstitial changes, specifically thickening and blurring of bronchial vascular bundles, reticular shadows, and ground glass shadows, which first appear in the two lower lung fields, and then develop to the middle and upper lung fields, and may result in compensatory emphysema alveoli, and finally may develop into honeycomb lungs. 3. Vasculitis: vasculitis can also lead to reticulation of the lungs. There are many kinds of vasculitis that cause lung lesions, such as aortitis, giant cell arteritis, polyarteritis nodosa, variant granulomatous vasculitis, etc., which can involve the lungs and cause lung lesions, and the patient’s manifestations include coughing, coughing up sputum, etc. If there is a subpleural image in both lungs, it can be seen in the chest. If there are two lungs under the pleura to see the strip-like grid changes, it is recommended that the patient promptly consult a doctor to clarify the cause of the disease, give targeted treatment.