Earwax is medically known as cerumen. If the ear is blocked by earwax, i.e., cerumen embolism is formed, the earwax should be removed from the ear canal under the operation of a professional doctor, or the external ear canal should be flushed to remove the earwax. There are ceruminous glands in the skin of the cartilaginous part of the external auditory canal, and their secretions are called cerumen, commonly known as earwax. Most of the cerumen is dry and flaky, and can be dislodged outward with the change of head position or movement, as well as the activity of the jaw joints; some of them are oily cerumen, which is not easy to be dislodged; and sometimes, cerumen, due to various reasons, accumulates in the external auditory canal and coagulates into lumps, which clogs up the external auditory canal, and becomes a cerumen embolism. If it is only earwax blocking the ear canal, the doctor can remove the earwax with the help of professional tools such as suction, cerumen hooks and ear tweezers. If the earwax is too hard to form a cerumen embolism and is difficult to remove, it is necessary to use ear drops that soften the earwax, such as sodium bicarbonate ear drops, etc. After softening the cerumen, warm saline external ear canal rinsing or suction to remove the cerumen. When the ear is blocked by earwax, it is recommended that the earwax be removed by a specialist at a hospital visit.