目的；观察经皮球囊二尖瓣成形术的疗效及安全性。方法：采用经皮球囊二类瓣成形术治疗二尖瓣狭窄41例。结果：39例成功，无1例死亡。39例随访6个月至5年，1例发生二尖瓣再狭窄，1例主动脉关闭不全加重（中度），其余病例疗效稳定。结论：认为这项技术安全有效。 Objective To observe the efficacy and safety of percutaneous balloon mitral valvuloplasty. Methods: Twenty - two cases of mitral valve stenosis were treated by percutaneous balloon balloon angioplasty. Results: 39 cases were successful, none of them died. Thirty-nine patients were followed up for 6 months to 5 years. One case had mitral valve restenosis, one case had aortic regurgitation aggravated (moderate). The rest cases were stable. Conclusion: This technique is considered safe and effective.