Rattling inside the ears when eating may be caused by cerumen in the external ear canal, temporomandibular joint disorder, and so on. 1. Cerumen in the external auditory canal: If there is a lot of cerumen in the external auditory canal and the cerumen is close to the tympanic membrane, the cerumen will rub against the tympanic membrane with the movement of the chewing muscles when a person eats, thus causing the ringing of the ears, and the sound will disappear after the cerumen is removed. 2. Temporomandibular joint disorder: when chewing, especially when eating hard things, due to the temporomandibular joint disorder, there will be temporomandibular joint popping, popping into the ears of the patient thought that there is a ringing sound in the ears. Can go to the stomatology department to check, usually take the local hot compress or physiotherapy. Eating inside the ear ringing, it is recommended that the hospital consultation, diagnosis and standardized treatment.