1, high morbidity and mortality U.S. statistics 1921, 1930 occurred in 44,684 cases of pneumonia, the incidence of pneumonia in patients over 80 years of age is about 5 times that of patients in their 20s, while the mortality rate is almost 100 times. emori review of 100,000 cases of nosocomial infections in hospitals across the United States in 1986, 1990, patients over 65 years of age accounted for 54%, of which pneumonia accounted for 18%, pneumonia is the cause Pneumonia is the most common infection leading to death in the elderly. China’s Zhujian statistics 8947 cases of elderly autopsy cause of death, pneumonia has the 50s 3rd to 70s accounted for the 7th. The objective reasons for the high morbidity and mortality of pneumonia in the elderly are the aging of the body, changes in the anatomy and function of the respiratory system leading to a decrease in systemic and local defense and immune function of the respiratory tract, weakened functional reserves of important organs or multiple chronic and serious diseases. The subjective causes are delayed diagnosis and inappropriate therapeutic measures.2 The onset of pneumonia in the elderly is often one of the following two manifestations: the most common manifestation is the gradual deterioration of the patient’s health, including loss of appetite, anorexia, lethargy, urinary incontinence, dizziness, acute confusion, weight loss, depression, all of which are non-specific for pneumonia, and the other manifestation is the sudden deterioration or slow recovery of the underlying disease. If heart failure recurs or worsens despite appropriate treatment, when the pathogen of pneumonia is effectively controlled, another conditional pathogen occurs, so the time of onset and duration of pneumonia are difficult to determine. 3. atypical symptoms Elderly patients with pneumonia often have no cough, cough, fever, chest pain, etc. Elderly people have a weak cough and sputum that is mostly white mucous or yellow purulent, easily confused with chronic bronchitis and upper respiratory tract infections. It is more common to have increased respiratory rate, shortness of breath or dyspnea, as opposed to mild or absent respiratory symptoms, and systemic toxic symptoms are more common and can appear early.4. Signs are non-specific Typical pulmonary solid signs in elderly patients with pneumonia are rare. In the past few years, the number of patients with pneumonia has been increasing. Common complications include shock, severe sepsis or septicemia, cardiac arrhythmias, water-electrolyte disturbances and acid-base imbalance, respiratory failure, heart failure and multi-organ failure, which become important causes of death in elderly pneumonia.