AIM:To investigate effects of trabeculectomy for primary angle-closure glaucoma. METHODS:The retrospective case summary of our hospital from 2000 to December 2010 included totally 312 patients undergoing routine trabeculectomy,they were treated with preoperative intraocular pressure (IOP) reducing treatment and prevention of infection to get the effect of no local significant ciliary hyperemia and intraocular pressure below 30mmHg.They were operated on under surface anesthesia. RESULTS:Two hundred and eighty-seven cases were with IOP controled within the normal range postoperatively, accounting for 92.0%; IOP less than 10mmHg was in 3 cases, accounting for 1.0%; IOP higher than 21mmHg was in 22 cases, accounting for 7.0%:IOP was normal, but after 5 years follow-up there was progressive visual field damage in 16 cases, accounting for 5.1%. CONCLUSION:Trabeculectomy for patients responding poorly to drugs or laser treatment is effective. For glaucoma patients,it can effectively reduce IOP, protect visual function and improve quality of life and is a safe and feasible method for glaucoma surgery.