Normal lung texture is mainly an image of the pulmonary arteries, pulmonary veins, bronchi and lymphatic vessels are also involved in the formation of lung texture shadows. Thickening of pulmonary texture can be seen in a variety of diseases, not necessarily pneumonia. 1. Vascular thickening of pulmonary texture: the pulmonary texture is thicker with clearer edges, and it is characterized by vascularization from the pulmonary hilum to the lungs. Mitral stenosis, atrial septal defect, and arterial catheterization may occur. 2. Bronchial thickening of pulmonary texture: the thickness of the pulmonary texture is uneven, which is often mixed with deformed texture and small honeycomb shadows, and sometimes the “orbit sign” can be seen, which is more obvious in the lower field. It is common in chronic bronchitis and bronchiectasis. 3. Lymphatic thickening of pulmonary texture: the pulmonary texture in both lungs is in the form of a thin mesh, which is commonly seen in pneumoconiosis (e.g. silicosis), cancerous lymphangitis, etc. Therefore, thickening of pulmonary texture does not necessarily mean that it is a disease of the lungs, but that it is a disease of the lungs. Therefore, thickening of lung texture is not necessarily pneumonia, but also heart disease, pneumoconiosis, cancerous lymphadenitis, and so on. When thickening of lung texture occurs, it is important to consult a doctor in time to identify the cause of the disease and treat it as soon as possible.