Preparation for cataract surgery is very important. In addition to a series of eye and body examinations with the doctor, it is also necessary to make physical and mental adjustments. Cataract surgery is a sight restoration surgery and most of the results are very good, but due to the individual differences between people, there is a possibility of some complications, so as a patient’s family, they should fully understand the intraoperative and postoperative complications and possible abnormalities and cooperate with the doctor. Before surgery, we should pay attention to the hygiene of the eye that needs to be operated on, and routinely order antibacterial eye drops. Except for pediatric general anesthesia surgery, which requires a ban on eating and drinking anything for 8 hours before surgery, cataract surgery patients can eat normally before surgery, but do not eat too much.