To evalutate the clinical effects of patients with rhegmatogenous retinal detachment（RRD）treated by outer-scleral operation. METHODS:Totally 220 cases (220 eyes) with RRD at our hospital were analysed randomly.There were 70 cases (70 eyes) suffering from complicated RRD and 150 cases (150 eyes) from non-complicated RRD.They were performed scleral encircling and buckling associated with cryotherapy and drainage(or without drainge)or scleral buckling associated with cryotherapy and drainage(or without drainge)respectively. RESULTS:No significant difference was shown between the two operations for complicated RRD and non-complicated RRD. The rate of anatomic retinal attachment of non-complicated RRD reached 89.3%,while that of complicated RRD stood at 72.9%. CONCLUSION:Outer-scleral operation is a kind of effective surgery to treat non-complicated RRD,it is better to perform vitreoretinal surgery on complicated RRD. Scleral encircling is not very necessary in the RRD surgery.