【Objective】To retrospectively investigate the incidence，computed tomography（CT）manifestations and consequences of hemorrhagic pulmonary sheath（HPS）in Stanford A aortic dissection（AD）patients.【Methods】Institu? tional review board approval and informed consents were obtained. CT aortic angiography images of 188 consecutive acute Stanford A aortic dissection patients（mean age，59 years；range：29-78 years；136 males，52 females）were reviewed. CT images were interpreted by two independent radiologists. Clinical records were reviewed for outcomes of patients up to 30 days after the initial CT scan.【Results】18（9.6%）out of 188 patients had HPS. Right pulmonary artery was involved in 9（50%），left pulmonary artery in 2（11.1%）and both in 7（38.9%）of the 18 patients respectively. HPS extending along bronchovascular sheaths（Type Ⅱ）was identified in 9（50%）of 18 patients，and 7（77.8%）of them had alveolar opacity around the thickened bronchovascular sheath. Within 30 days of follow-up，61.1%（11/18）patients died and 38.9%（7/18）patients survived with absorption of HPS. Type Ⅱ HPS was more prevalent in death group（7/11，63.6%） than survival group（2/7，28.6%），but not statistically significant（P=0.335）. Patients in death group were more likely to have abdominal visceral arteries involvement（7/11，63.6%）than patients in survival group（0/7，0%）（P=0.010）. 【Conclusion】HPS was not a rare complication in patients with Stanford A AD. Abdominal visceral arteries involvement in? dicated poor short-term outcome in this study.