Generally, you can wash your hair about 3~7 days after cataract surgery, but the exact recovery is related to the patient’s wound recovery. After cataract surgery, dirty water should be strictly prevented from entering into the eye, so as not to cause corneal damage or induce intraocular infection, so it is recommended to wash the hair about 3~7 days after surgery. However, the specific recovery time is related to the patient’s condition. If the patient has corneal infection, the recovery time will be longer, and the patient can wash his/her hair with the help of other people to avoid dirty water from entering into the eye. After surgery, patients should keep their eyes clean and hygienic, clean their eyes, keep the local sterile environment, and follow the doctor’s instructions to use antibiotic eye drops for treatment, such as tobramycin eye drops, etc., to prevent infection. It is recommended that after cataract surgery patients follow the doctor’s instructions for care, regular review, and timely consultation after discomfort.