目的 总结CT引导下肝脏Ⅸ段肿瘤微波消融的严重并发症发生情况，为疾病的防治提供策略。 方法 对我院肝胆胰外科2013年10月至2023年7月104例CT引导下经皮肝穿刺微波消融肝脏Ⅸ段肿瘤患者的围消融期严重并发症及死亡情况进行回顾性统计分析。 结果 全组手术成功率为100%；术后患者并发大量胸腔积液、液气胸、腹腔内出血、肝脓肿、消融针折断、迟发性胆道损伤及肿瘤-十二指肠内瘘各1例，无围消融期死亡病例；围消融期严重并发症发生率为6.7%、死亡率为0%。 结论 CT引导下经皮肝穿刺Ⅸ段肿瘤微波消融的围消融期严重并发症发生率较低，消融手术安全可行。

Objective To summarize the serious complications of CT-guided microwave ablation of Ⅸ tumors in the liver and related prevention and treatment strategies. Methods A retrospective statistical analysis was conducted on 104 severe complications in patients with hepatic Segment Ⅸ tumors who underwent CT-guided percutaneous microwave ablation in the Department of Hepatobiliary and Pancreatic Surgery of our hospital from October 2013 to July 2023. Results The surgical success rate of the whole group was 100%. Postoperative complications were massive pleural effusion and liquid pneumothorax in 1 case， abdominal hemorrhage in 1 case， liver abscess in 1 case， ablation needle rupture in 1 case， delayed biliary tract injury in 1 case， and tumor-duodenal fistula in 1 case. The incidence of serious complications was 6.7%， and no deathoccurred during periablation. Conclusion CT-guided percutaneous microwave ablation for tumors in hepatic segment Ⅸ was associated with a low incidence of serious complications， indicating that the procedure was both safe and feasible.