After the diagnosis of cataract, depending on the degree of affecting vision or the patient’s own condition (whether it is combined with fundus disease or glaucoma), conservative treatment or surgical treatment can be chosen. Once the vision loss affects the quality of life, the degree of cataract is more severe or combined with fundus disease or closed-angle glaucoma, surgical treatment of cataract is the only internationally recognized effective treatment. Although there are still many kinds of anti-cataract drugs widely used in clinical practice all over the world, the efficacy is not very precise, the treatment effect is irreversible and there is no drug to cure cataract at present. Once vision loss affects quality of life (clinically recommended corrected visual acuity less than or equal to 0.6), cataract aggravates or combines with fundus disease and closed-angle glaucoma, surgery is an internationally recognized effective treatment method, and the mainstream surgical method is cataract ultrasonic emulsion aspiration combined with folded IOL implantation, which has a small incision, fast surgery, little pain for patients, fast postoperative recovery, good surgical effect and low cost. This procedure uses ultrasound to crush the lens nucleus in the eye, and the overflowing ultrasound energy may damage the intraocular tissues at the same time, therefore, this procedure is not suitable for patients with advanced cataract who have overripe cataract and hard lens nucleus. If cataract patients choose to perform ultrasound emulsification surgery, they should not wait until their vision is too low, otherwise they will suffer a lot of intraocular damage and slow recovery after surgery. This surgery is interlocked and done in one step. If not done properly, more serious complications can occur, so it is recommended to find an experienced cataract specialist to perform the surgery. In conclusion, surgery for cataract is the only internationally recognized and effective treatment. It is recommended to do it early if it affects your vision and to find an experienced cataract specialist to perform the surgery.