You can fly 48 hours after surgery. 10-14 days after surgery, you can remove the ear canal filling and take drops in the external ear canal for a period of time. If water enters the ear during bathing or swimming, bacteria may easily grow in the ear, if water has already entered the ear, you can use cotton swabs to clean it, but the depth should not be too deep. This will prevent the mucous membrane of the upper respiratory tract from being irritated and causing swelling.