目的　探讨食管癌放射治疗后复发的相关预后因素 ,旨在选择最佳治疗方案 ,提高食管癌疗效。方法　对70例食管癌放射治疗后复发的多个预后因素用Cox模型分析。结果　年龄、肿瘤部位、长度、X线分型、外侵及剂量与复发有关 ,而年龄、长度、X线分型、外侵是主要的四个预后因素。结论　对于年龄大、病灶长、X线凶险型和外侵明显的患者进行CT准确定位 ,及时调整治疗方案和综合治疗 ,可以减少复发 ,提高疗效 Objective To investigate the prognostic factors associated with recurrence of esophageal cancer after radiotherapy in order to select the best treatment and improve the efficacy of esophageal cancer. Methods Multivariate prognostic factors for recurrence after radiotherapy for 70 cases of esophageal cancer were analyzed by Cox model. Results Age, tumor location, length, X-ray classification, external invasion and dose were related to recurrence, while age, length, X-ray type, and external invasion were the four major prognostic factors. Conclusion Accurate CT localization for patients with older age, longer lesions, more aggressive X-ray lesions, and more aggressive external invasion, timely adjustment of treatment options and comprehensive treatment can reduce recurrence and improve efficacy.