Abstract: Objective: To observe the clinical efficacy of phacoemulsification combined with intraocular lens implantation in the treatment of angle-closure glaucoma(ACG) complicated with cataract. Methods: Forty-seven patients(56 eyes) with acute ACG complicated with cataract(the closing range of anterior chamber angle smaller than 180°) were treated with phacoemulsification combined with intraocular lens implantation.The intraocular pressure,depth of anterior chamber,anterior chamber angle and corrected vision in all cases between before and after operation were compared,and all patients were followed up for 6 months. Results: Compared with before operation,the best corrected vision,intraocular pressure,depth of anterior chamber and anterior chamber open angle in all cases were significantly improved after operation(P<0.01). Conclusions: The effect of phacoemulsification combined with intraocular lens implantation in treating the ACG complicated with cataract is good.