目的　探讨体表超声对中段食管癌的诊断价值。方法　采用扇形扫描探头，以心脏为声窗，对５５ 例中段食管癌患者进行体表超声探测，观察病灶部位、长度、壁厚度、僵硬感、与邻近组织的关系以及淋巴结转移情况，并与吞钡Ｘ 线摄片及手术结果对照分析。结果　体表超声对中段食管癌的诊断率为９４－５％ ，略低于吞钡Ｘ 线摄片；肿瘤侵犯邻近组织的诊断率为７１％ ；病灶旁淋巴结肿大发现率为７３ ％ 。结论　体表超声与吞钡Ｘ线摄片、内窥镜、经食管超声检查有互补作用，该技术可作为中段食管癌诊断的主要方法之一。 Objective To investigate the diagnostic value of surface ultrasound in the middle esophageal cancer. Methods A sector-scanning probe was used with the heart as the acoustic window to perform surface ultrasound examination on 55 patients with esophageal carcinoma in the middle segment. The lesion location, length, wall thickness, stiffness, relationship with adjacent tissues, and lymph node metastasis were observed. X-ray radiograph and comparison of surgical results. Results The diagnostic accuracy of surface ultrasound in the middle segment of esophageal cancer was 94-5%, which was slightly lower than that of the X-ray; the diagnostic rate of the tumor invading the adjacent tissue was 71%; the detection rate of the paraneoplastic lymph nodes was 73%. Conclusion Body surface ultrasound is complementary to X-ray radiography, endoscopy, and transesophageal ultrasound. This technique can be used as one of the main methods for the diagnosis of middle esophageal cancer.