目的探讨急性主动脉夹层(AAD)发病特点及早期诊断线索。方法对38例患者临床表现,辅助检查及误诊情况进行回顾性分析。结果剧烈胸背痛为最常见的首发症状,部分患者以其他症状首发。CT和UCG检查准确率高。结论 AAD临床表现复杂,工作中应加强心血管知识的学习积累,提高警觉性,及时选择CT及UCG检查以提高首诊确诊率。 Objective To investigate the characteristics and early diagnosis of acute aortic dissection (AAD). Methods 38 cases of clinical manifestations, laboratory examinations and misdiagnosis were retrospectively analyzed. The results of severe chest pain is the most common first symptom, some patients with other symptoms starting. CT and UCG examination of high accuracy. Conclusions The clinical manifestation of AAD is complex. During the work, we should strengthen the learning accumulation of cardiovascular knowledge, improve the alertness, timely select CT and UCG to improve the diagnosis rate of first visit.