Objective: To observe the changes of diagnosis and treatment of a patient with rhegmatogenous retinal detachment (RRD) after phakic intraocular lens implantation in high myopia, and analyze its mechanism and treatment combined with the literature. Methods: To report a case of rhegmatogenous retinal detachment (RRD) after phakic intraocular lens implantation. Result: Two months after the patient underwent scleral cerclage + pad pressing + vitrectomy + silicone oil filling, the fundus color photos showed that the vitreous cavity was filled with silicone oil, the fundus retina was flat, the cerclage ridge was obvious, and a large number of old laser spots. After the silicone oil in the eye was removed, the eye examination: the naked visual acuity of the left eye was 0.12, the corrected visual acuity was -3.25ds / - 1.50dc * 180 = 0.4, the intraocular pressure was 19mmHg, the ring ridge was seen in the fundus after mydriasis, a large number of old laser spots and flat retina;The OCT showed that the macular structure of the left eye was complete and there was no subretinal fluid. Conclusion: Scleral cerclage + padding + vitrectomy + silicone oil filling is an effective treatment for retinal detachment (RD) after PIOL.