目的探讨90°喉内窥镜在喉咽部异物诊治中的应用。方法对102例有喉咽部异物史行常规间接喉镜检查未发现异物的患者,采用外径8 mm 90°喉内窥镜连接影像显示系统进行检查和治疗。结果102例中98例喉咽有异物,均在喉内窥镜下用异物钳成功取出。4例未发现异物,经X线诊断为食管异物,行食管异物取出术时发现异物位于食管入口。结论喉内窥镜光线充足、视野清晰、操作方便,可有效地减少隐蔽性喉咽异物的漏诊,是一种安全、有效、患者易接受的诊疗方法。 Objective To investigate the application of 90 ° laryngeal endoscopy in the diagnosis and treatment of foreign body in hypopharynx. Methods Totally 102 patients with history of laryngopharyngeal foreign body who had not been found foreign body by conventional indirect laryngoscopy were examined and treated by the video display system with 8 mm diameter 90 ° endoscope. Results Of the 102 cases, 98 cases of foreign bodies were found in the larynx pharynx. All of them were successfully removed by foreign body pliers under the endoscope. 4 cases found no foreign body, the X-ray diagnosis of esophageal foreign body, foreign body esophageal foreign body removed at the esophagus found foreign body entrance. Conclusion The laryngeal endoscope has enough light, clear vision and convenient operation, which can effectively reduce the missed diagnosis of occult foreign laryngeal foreign body, which is a safe, effective and patient-acceptable method of diagnosis and treatment.