Ear ringing when eating is commonly caused by ear canal cerumen, temporomandibular joint abnormality and secretory otitis media. 1. Cerumen in the ear canal: If there is a lot of cerumen in the external ear canal close to the tympanic membrane, the cerumen will touch the tympanic membrane with the movement of the chewing muscles when eating, resulting in the symptom of ringing in the ears. 2. Temporomandibular joint disorder: It may also be caused by temporomandibular joint disorder. Since the temporomandibular joint is connected to the external auditory canal, the friction sound of the temporomandibular joint will be transmitted to the ear when you are eating, and the ear will ring. 3. Secretory otitis media: When the patient suffers from secretory otitis media, the symptom of ears ringing when eating may also occur. When otitis media patients have fluid in the tympanic chamber, negative pressure in the middle ear, when eating and swallowing the pharyngeal opening of the Eustachian tube, the tympanic chamber fluid there will be gas through, at this time will feel the ears ringing. Therefore, it is recommended that patients go to the hospital in time, to clarify the cause of the disease, for treatment.