Earwax, also known as cerumen, is mostly exfoliated cells of the skin, which plays a key role in keeping the ear canal healthy. Earwax can not only keep the ear canal clean, but also keep Vito moist, avoid being too dry, prevent dust or foreign matter from invading the ear canal, inhibit the growth and reproduction of bacteria, and avoid excessive impact of incoming sound waves, thus protecting hearing. In daily life, chewing, opening your mouth and other actions are easy to discharge earwax, so we don't have to dig it out ourselves. If you pull out your ear with a cotton swab, it is easy to push the earwax into the depths of the ear canal and hinder the discharge of earwax. It is called cerumen embolism in medicine.