AIM:To discuss the surgery and its clinical efficacy of non-scleral flap suture fixation of posterior chamber intraocular lens(PC-IOL) through ciliary sulcus.METHODS:A Total of 15 eyes without the support of lens capsule underwent non-scleral flap suture fixation of PC-IOL implantation through ciliary sulcus,using scleral interlayer "W"-shaped walking through and the fixed method of end burning for external scleral suture.It was primary surgery in 5 eyes,secondary surgery in 10 eyes.Patients were followed up for 0.5 to 3 years,an average of 1.8 years,to observe the visual acuity,suture location and complications.RESULTS:Vision ≥0.5 was in 10 eyes(67%),little intraoperative bleeding in 4 eyes(27%),oblique intraocular lens in 3 eyes(20%),cystoid macular edema in 2 eyes(13%);there was no 1 case of suture exposure or slippage.CONCLUSION:In the absence of lens capsule support,non-scleral flap suture fixation of PC-IOL through ciliary sulcus is a safe and effective surgical method.