The incidence of secondary glaucoma after cataract surgery varies greatly with the change of surgical years, which is related to the improvement of eye microsurgery techniques. Generally speaking, the incidence of increased intraocular pressure and glaucoma after cataract surgery is less in phacoemulsification surgery than in extracapsular extraction surgery, which is less in extracapsular extraction surgery than in intracapsular extraction surgery, less in intraocular lens implantation in the capsular bag than in the ciliary sulcus, and less in posterior chamber intraocular lenses than in anterior chamber and iris intraocular lenses. In recent years, cataract extraction and intraocular lens implantation have developed rapidly, especially the improvement of sutureless surgical incisions, intraocular lens implantation in the capsular bag, the development and application of various viscoelastics, the improved design of new intraocular lenses, and the promotion of phakic emulsification. The incidence of postoperative intraocular pressure increase and glaucoma in aphakic and intraocular lens eyes has gradually decreased. However, at the same time, the surgery of complex cases has also brought some new problems, such as intraocular lens suspension surgery, intraocular lens implantation with iris diaphragm, and intraocular contact lens implantation in phakic eyes. If the intraocular pressure continues to rise, it will cause irreversible damage to the visual function. As a popular cataract restoration surgery, it is particularly important to understand and recognize the postoperative intraocular pressure increase and glaucoma, and to deal with them in a timely and appropriate manner.