AIM:To evaluate the efficacy of reoperation for encapsulated cystic blebs after Ahmed glaucoma valve implantation. ·METHODS:The series cases of 7 eyes 7 patients with elevated intraocular pressure (IOP) induced by proliferation around Ahmed value were retrospectively studied. The IOP increased at 1 month to half a year,2 months in average. Secondary surgery preoperative examination:the elevation could not be controled by medicine,the plate and valve tube position was normal,the orifice was smooth without stemming,localized encapsulated cystic blebs were found in the equator of eyeball in which the plate was located. All patients underwent encapsulated cysts resection combined with mitomycin-C under conjunctival flaps. The changes of IOP and the outcome of the diseases were observed. ·RESULTS:At 1 month after surgery,all patient’s IOP were in the normal range,and the surgery success ratio was 100%;at 6 months after the surgery,2 patient’s IOP kept the normal level (15.00mmHg) without any anti-glaucoma medications.The normal IOP level were in 3 cases by using 2 or 3 different kinds of anti-glaucoma medications,and surgery success rate was 71% (5/7). IOP beyond control were in 2 cases,and further surgical treatment was necessary.·CONCLUSION:It is considered an effective method of surgical treatment for encapsulated cystic blebs around Ahmed value.