Repeated episodes of pneumonia in the elderly may be due to prolonged bed rest, accompanied by underlying diseases, and so on. 1, long-term bed-ridden: the old man’s lung base is in edema, siltation, and the elderly cough cough sputum weakness, resulting in poor drainage of sputum may trigger recurrent lung infections. 2. Accompanied by underlying diseases: combined with chronic renal failure, heart failure, malignant tumors, malnutrition and other underlying diseases, or with a history of multiple chronic lung diseases, more likely to recurring pneumonia. 3. Other: If the patient is healthy and still has recurrent pneumonia, it may be due to untimely or improper treatment of pneumonia resulting in delayed condition. When recurrent pneumonia occurs in the elderly, it is recommended to do relevant examinations in a timely manner in regular hospitals, so as to avoid aggravating the condition or even endangering the life of the patient.