Pneumonia, if the patient is diagnosed with pneumonia, active anti-infection treatment is needed, and the patient should be reviewed after anti-infection treatment. 2. Pulmonary tuberculosis can also present with fever accompanied by lung shadows, and active tuberculosis can be diagnosed when antacid bacilli are detected in the patient’s sputum, and anti-tuberculosis treatment is needed. 3. Tumors in the lung can also show the above clinical manifestations, and after the diagnosis of lung tumor is confirmed by bronchoscopy, lung aspiration and lung biopsy, surgery, radiotherapy, chemotherapy or target cell drug therapy will be taken according to the condition. Therefore, when patients have fever with lung shadow, they need to actively seek medical advice, improve relevant examinations, clarify the diagnosis and make active treatment to avoid delaying the disease.