目的　探讨内镜下气囊扩张治疗贲门失弛缓症 (AC)的疗效。方法　应用Regiflex气囊扩张器在内镜下扩张治疗AC 39例。结果　术后临床表现均显著改善 ,随访 3个月～ 3年 ,疗效达 97.4 %。患者无穿孔等合并症发生 ,并均为一次扩张成功。结论　内镜引导下气囊扩张治疗AC方法简单、安全 ,近、中期疗效肯定 ,可作为本病的首选治疗方法 Objective To investigate the efficacy of endoscopic balloon dilation in the treatment of achalasia (AC). Methods Thirty-nine cases of AC were treated with Regiflex balloon dilation. Results The postoperative clinical manifestations were significantly improved. The follow-up of 3 months to 3 years achieved a therapeutic effect of 97.4%. Patients with no complications such as perforation occurred, and are a successful expansion. Conclusion Endoscopic-guided balloon dilatation of AC method is simple, safe, near and mid-term curative effect can be used as the preferred treatment of this disease