Ear rinsing is a very common operation in ENT department, which mainly deals with earwax or foreign bodies in the ear canal. If the patient has earwax or foreign bodies in the ear canal such as flying insects, the doctor needs to carry out local softening. The water flow in the ear canal is directed at the ear canal, not at the eardrum, and the force of the water flow is used to flush the cerumen or foreign body out of the ear canal, which is not too strong and not uncomfortable for the patient. Therefore, ear flushing is a very safe operation and patients should not worry too much about it.