对48例慢性上颌窦炎患者行功能性鼻窦内窥镜手术（FESS），单纯钩突切除术6例，约突切除术＋前、中筛房开放术13例，钩突切除术＋全筛切除术18例，钩突切除术＋全筛切除及中鼻甲成形术11例。经观察，术后2个月上颌窦功能恢复正常16例（33．3％），3．5个月恢复正常20例（41．7％），5个月恢复正常9例（18．8％）；累积治愈率为93．8％。表明FESS后，上颌窦粘膜生存条件改善后，具有自我恢复功能的能力。此外，术中尽量避免不必要的创伤，对于上颌窦功能的恢复有促进作用。 Forty-eight patients with chronic maxillary sinusitis underwent functional endoscopic sinus surgery (FESS), simple uncinatectomy in 6, surgical resection plus frontal and middle sieve open in 13 cases, uncinatectomy + full screen Resection in 18 cases, uncinatectomy + total screen resection and middle turbinate in 11 cases. After 2 months of operation, maxillary sinus function returned to normal in 16 cases (33.3%), 3.5 months returned to normal in 20 cases (41.7%), 5 months returned to normal in 9 cases (18.8% ); Cumulative cure rate was 93.8%. After FESS, maxillary sinus mucosa survival conditions improved, with the ability to self-recovery. In addition, surgery to avoid unnecessary trauma, for the restoration of maxillary sinus function has a role in promoting.