Schlemm’s canaloplasty is a new anti-glaucoma surgical technique that has emerged in recent years. The basic surgical steps include creating a 1/2-thick lamellar scleral flap, creating a 2/5-thick deep scleral flap below it, separating the deep scleral flap to Schlemm’s canal, excising the outer wall of Schlemm’s canal, creating a Diaphragm window, excising the deep scleral flap, and creating an atrial drainage lake. The outer wall of Schlemm’s canal was excised to create a Diaphragm window; the deep scleral flap was excised to form an atrial drainage lake; the microcatheter was inserted through the opening of Schlemm’s canal on one side, traveled 360 degrees, and then passed through the opening of Schlemm’s canal on the other side, and a 10-0 non-absorbable suture was tied to the microcatheter. The 10-0 non-absorbable suture is tied to the head end of the microcatheter, and the microcatheter is pulled out backwards and the viscoelastic is pushed in while the microcatheter is withdrawn. Once the microcatheter is withdrawn, the sutures are brought into the Schlemm’s canal. The non-absorbable sutures are tightened and ligated. The scleral flap and conjunctiva are closed tightly with sutures. In this way, the Schlemm’s canal and its collecting ducts are dilated by the viscoelastic and the pulling effect of the sutures, and the Schlemm’s canal is prevented from recollapsing, thus reducing the resistance to atrial water outflow. There is microfracture formation, which also reduces the resistance of the trabecular meshwork to atrial water flow. The thin Diaphragm window also has an atrial drainage effect, which allows atrial fluid to enter the atrial drainage lake and then the Schlemm’s duct and collecting duct to enter the venous blood system. Over 10 years of clinical use, numerous studies have confirmed its good and safe IOP-lowering effect. Since Schlemm’s canal is an improved physiological outflow channel for atrial fluid, it does not require the formation of subconjunctival follicles and does not artificially make an anatomical filtration channel, thus reducing the complications of thin-walled follicles, follicular fistulas, follicular infections, ocular surface changes caused by follicles, and dry eyes. It is increasingly accepted by doctors and patients. The indications for Schlemm’s canaloplasty are: 1) primary open-angle glaucoma; 2) juvenile glaucoma; 3) hormonal glaucoma; 4) glaucoma after failed filtration surgery; 5) pseudocapsular detachment syndrome; 6) atrial angle regression glaucoma.