AIM:To analyze the causes and treatment of shallow anterior chamber after trabeculectomy on glaucoma.METHODS:A total of 96 case 128 eyes with glaucoma were treated with trabeculectomy and postoperatively shallow anterior chamber was found.All cases were analyzed retrospectively.RESULTS:Shallow anterior chamber was found in 26 eyes(20.3%)after trabeculectomy in 128 eyes.The causes included :excessive aqueous humor run off(19/26,73.1%),leakage of filter bulb(4/26,15.4%),detachment of choroid(2/26,7.7%),malignant glaucoma(1/26,3.8%).After proper management,shallow anterior chamber returned to normal depth in all cases.CONCLUSION:Shallow anterior chamber is usually found after trabeculectomy.It is necessary to adopt corresponding treatment according to its causes for avoiding the shallow anterior chamber.