·AIM:To investigate the surgical skills and prevention of complications of Ahmed valve implantation for refractory glaucoma.·METHODS:This retrospective study reviewed the visual acurity,intraocular pressure(IOP)and complications in 5 refractory glaucoma patients with Ahmed valve implantation from 1999 to 2009.·RESULTS:In the follow-up examination of 6 to 24 months,the IOP was reduced from 43.00±14.71 to 22.60±12.72mmHg.Visual acurity improved in 1 case,continued in 3 cases and decreased in 1 case.The tubes were placed right in 4 cases,the other case touch to cornea.Iris neovascularization reduced in different degrees in 3 NVG.Complications included anterior chamber hemorrhage in 3 cases,anterior chamber fibrous exudation in 4 cases,tube blockage in 2 cases,shallow anterior chamber in 2 cases,anterior chamber disappearance and high IOP in 1 case in final,tube explosure in 1 case.·CONCLUSION:Ahmed glaucoma valve implant is an effective method for treating refractory glaucoma,and the surgical skills will reduce the incidence of early complicaions.·