自发性气胸是呼吸系统常见病，临床上一般采取抽气、胸腔闭式引流法治疗，多数可治愈。但闭式引流增加病人痛苦，易并发胸腔感染。我们1990年以来采用胸膜腔注入氧气治疗自发性气胸43例，取得了明显效果。1对象与方法1．1对象84例均为住院患者，经X线胸片确诊肺压缩15％～90％ Spontaneous pneumothorax is a common respiratory system, the general clinical use of suction, closed thoracic drainage therapy, the majority can be cured. But closed drainage increases the patient’s pain, complicated with chest infection. We have used pleural cavity oxygen injection since 1990 to treat 43 cases of spontaneous pneumothorax and achieved remarkable results. 1 objects and methods 1.1 objects 84 cases were hospitalized patients, confirmed by X-ray chest compression of 15% to 90%