Objective To analyze the risk factors,clinical characteristics,and missed factors of acute pulmonary embolism (APE) after surgery,so as to advise clinicians to improve understanding of the early postoperative APE and enhance prevention concepts.Methods Retrospectively analyzed the general information of 43 cases of surgical patients with APE after surgery categories,risk factors,clinical manifestations and prognosis.Results APE after surgery had obvious risk factors; often occurred within 2 weeks after surgery; commonly seen in malignant tumors (53.5％,23/43),orthopedics (27.9％,12/43) and other major surgery; clinical manifestations wasn't typical,of which chest distress and dyspnea was the most common symptom (93.0％,40/43),and other pestoperative symptoms were similar,easy to misdiagnosis.Conclusions Surgery is one of the important risk factors of APE.Preoperatively evaluating underlying diseases,postoperative strengthening preventional methods,early detection,early treatment,have great significance in reducing the occurrence of postoperative APE and improve the prognosis.