Abstract: OBJECTIV Community-acquired pneumonia is the leading cause of hospitalization of patients with infection. This paper reviewed the literatures in relating to the community-acquired pneumonia that were published both at home and abroad in recent years and revealed that virus tended to be the main pathogen causing the community-acquired pneumonia; mechanical ventilation was necessary for patients who had high-risk factors and high APACHE II score. The urine volume, hematocrit, and pH value were decreased; For the patients with severe community-acquired pneumonia, obvious exudation of two lungs indicated the poor prognosis. The early and timely standardized cluster treatment may shorten the time interval to reach clinical stable stage more rapidly and thus shorten the length of hospital stay and reduce the mortality rate.