目的：总结肺动脉栓塞猝死病例临床、病理特点。　　　　方法：对５例来自不同科室的肺动脉栓塞死亡的患者进行临床资料及解剖进行分析。　　　　结果：５例均为肺动脉干及左右分支的大块血栓栓塞，临床均漏诊肺栓塞。右心室腔均可见轻度扩大，肺动脉干扩大明显。镜下血栓体部均为混合性。　　　　结论：巨大肺动脉栓塞是导致猝死常见原因之一，常继发于长期卧床或手术后，生前临床常不能明确诊断，对这类患者应想到本病的可能，采取特异性检查以明确诊断，及时诊治。 Objective: To summarize the clinical and pathological features of sudden pulmonary embolism cases. Methods: The clinical data and anatomy of 5 patients died of pulmonary embolism from different departments were analyzed. Results: All the 5 cases were massive thromboembolism of pulmonary artery trunk and left and right branches. All of them were missed pulmonary embolism. Right ventricular cavity were mildly enlarged, pulmonary artery enlargement significantly. Microscopic thrombus body are mixed. Conclusions: Huge pulmonary embolism is one of the common causes of sudden death. Often times after long-term bed rest or surgery, the clinical diagnosis before birth can not be clearly diagnosed. For such patients, the possibility of this disease should be considered, and specific tests should be taken to confirm the diagnosis and timely Diagnosis and treatment.