Objective To investigate the clinical characteristics of severe cerebrovascular disease complicated with lung injury.Methods The clinical data of 46 cases of severe cerebrovascular disease were retrospectively analyzed.The cause,risk factors,clinical manifestations of lung injury were also analyzed.Results In 46 cases of severe cerebrovascular disease,33 cases [71.7％(33/46)] occured lung injury,including 28 cases of lung infection,3 cases of neurogenic lung edema,2 cases of lung embolism.Great age,disturbance of consciousness,swallowing disorders,bed time were the important risk factors for lung injury (P ＜ 0.05).Conclusions Lung injury is a common complication of severe cerebrovascular disease.Early assessment,early prevention and early diagnosis and treatment are the keys for reducing its incidence.