中文摘要：

社区获得性肺炎（ CAP）是指在社区环境下即医院外罹患的感染性肺实质炎症。而重症社区获得性肺炎（ SCAP）通常合并呼吸衰竭等，近年来SCAP的发病率、耐药率和死亡率均居高不下，已成为目前临床研究的热点。本文就SCAP的发病机制及其临床诊疗现状进行综述，以期为临床诊疗提供新的思路和对策。

英文摘要：

Community -acquired pneumonia （ CAP ） refers to the infection of pulmonary parenchymal inflammation in the community environment that is outside the hospital .Severe community-acquired pneumonia （SCAP） are often associated with respiratory failure , and has become the focus of clinical research , the incidence rate , resistance rate and mortality of which are high in recent years .This article makes a summary on the pathogenesis of SCAP and clinical status , in order to provide new ideas and countermeasures for the clinical diagnosis and treatment .