Patients with pneumonia can have lamellar shadows in the lungs, mostly accompanied by cough, sputum, fever and other symptoms, and need anti-inflammatory treatment to get better. Second, allergy, allergic patients can appear a transient shadow in the lungs, need to get out of the allergic environment, or to carry out targeted treatment to improve. Thirdly, lamellar shadows in the lungs can also be seen in other diseases such as tuberculosis and lung tumors, which require bronchoscopy, tuberculosis, and tumor examination to clarify.