Rhegmatogenous retinal detachment (RRD) is a common blinding ophthalmic dis-ease that has always received significant attention in clinical treatment. The foldable capsular buckle (FCB), as a new method for extraocular treatment of RRD, offers "Five Noes" advantages over traditional treatments such as scleral buckling (SB), pars plana vitrectomy (PPV), and pneumatic retinopexy (PR) - no retrobulbar anes-thesia, no muscle traction, no scleral fluid release, no intraoperative positioning, and no cryotherapy. This effectively reduces postoperative complications in RRD pa-tients and shortens the operation time. This review aims to investigate the develop-ment process and treatment principle of foldable capsule buckle, and focus on its therapeutic advantages, indication selection, efficacy and safety for rhegmatogenous retinal detachment. It is expected to play a more important role in the treatment of a variety of retinal diseases through technological innovation and application field ex-pansion.