Pain in the root of the ear can be caused by otitis media, and oral tumors can also cause pain in the mouth and root of the ear. Otitis media, also known as “ear bottom”, is a disease that causes pain in the head and sometimes pus from the ear. Although it is not a major disease, it causes endless pain. The most common symptoms of otitis media are a feeling of stuffiness or blockage in the ear, hearing loss and tinnitus. It often occurs after a cold, or unknowingly. Sometimes hearing can be improved with a change in head position. There is self-hearing enhancement. Some patients have mild ear pain. Children often show dullness in hearing or inattention. 1. Hearing loss: Hearing loss and self-hearing enhancement. When the head is tilted forward or to the healthy side, the hearing can be temporarily improved because the fluid leaves the cochlea (varicose hearing improvement). When the fluid is viscous, the hearing may not change with the change of head position. Children are often brought to the doctor by their parents because they are slow to respond to sound, inattentive, and have decreased academic performance. If one ear is diseased and the other ear has normal hearing, it may go undetected for a long time and be discovered during a physical examination. 2. Earache: In acute cases, there may be vague earache, which is often the first symptom of the patient, and it may be persistent or throbbing. In chronic cases, the ear pain is not obvious. The disease is often accompanied by a feeling of occlusion or stuffiness in the ear, which can be temporarily relieved by pressing the ear screen. 3. Tinnitus: It is mostly low-pitched and intermittent, such as “popping” sound, buzzing sound and running water sound. When the head moves or yawns or blows the nose, the sound of air passing through water can appear in the ear.