Thickening and blurring of the borders of the texture of both lungs is mainly used for lung imaging diagnosis, which can be seen in respiratory diseases, cardiovascular diseases, and lymphadenitis. Thickening and blurring of lung texture is mainly seen in larger bronchial tubes, perivascular exudation, leakage, inflammatory cells or cancer cells infiltration and other lesions. 1. Respiratory diseases: the most common, such as pneumonia, chronic bronchitis, chronic obstructive pulmonary disease and bronchiectasis, etc. can be seen in the thickening of lung texture. 2. Cardiovascular diseases: such as pulmonary hypertension, rheumatic heart disease, heart failure, etc. may have pulmonary vascular stasis, and the imaging examination shows thickening and blurring of the texture of both lungs. 3. Lymphangitis: Inflammatory lymphangitis formed by spreading inflammation of lobular pneumonia along lymphatic vessels, or cancerous lymphangitis formed by spreading cancerous cells along lymphatic vessels can be seen as thickening and blurring of lung texture. When the border of the two lungs is blurred with thickened texture, the diagnosis should be clarified under the guidance of a professional physician, combined with other laboratory or pathological examinations, and the treatment should be standardized.