Right middle lobe syndrome refers to the occurrence of atelectasis or lobe shrinkage in the right middle lobe of the lung with inflammation, and the patient will have cough, sputum, hemoptysis and other manifestations, which need to be treated medically or surgically according to the cause of the disease. Right middle lobe syndrome refers to bronchial lesions or extra-bronchial lymph nodes are compressed and obstructed, causing lung atelectasis or lobe shrinkage, and inflammatory solid lesions, the lesions mainly appear in the right middle lobe of the lung. Patients will have recurrent cough, cough mucus sputum, hemoptysis, chest tightness, chest pain and other manifestations. If it is caused by inflammatory lesions, it needs to be treated with antibiotics such as cefaclor and penicillin as prescribed by the doctor; for those caused by malignant diseases, they need to be treated by surgery, and even need to undergo radiotherapy and so on. It is recommended that the cause of right middle lobe syndrome should be examined in time, and appropriate measures should be taken to treat the cause of the disease.