１引言慢性化脓性上颌窦炎是常见病、多发病，易复发。常规治疗方法有鼻窦置换法、鼻内滴药、上颌窦穿刺冲洗及全身应用抗生素，但疗效不明显。我科１９９８年～２００１年应用鼻内镜行上颌窦自然窦口扩大术、并经下鼻道穿刺入上颌窦腔内，注入１％过氧化氢溶液、生理氯化钠溶 1 Introduction Chronic suppurative maxillary sinusitis is a common disease, frequently-occurring disease, easy to relapse. Conventional treatment of sinus replacement, intranasal drip, maxillary sinus puncture and systemic antibiotics, but the effect is not obvious. Our department from 1998 to 2001, endoscopic sinus surgery natural maxillary sinus augmentation, and the nasal cavity puncture through the nasal cavity, into the 1% hydrogen peroxide solution, physiological sodium chloride solution