Eardrum ringing during hiccups is mainly determined by the physiological anatomy of the middle ear cavity, because the only outlet of the middle ear cavity is through the Eustachian tube into the Eustachian tube pharyngeal opening, located in the posterior end of the nasal cavity, hiccups when the gas flow through the stomach to enter the pharyngeal throat, the airflow may be due to a sudden increase in air pressure, through the Eustachian tube opening into the middle ear cavity, resulting in the impact of the tympanic membrane caused by the ringing sound. A part of the patient is likely to have temporomandibular joint dysfunction, hiccups when the temporomandibular joints slightly misaligned, this time will produce a ringing sound, resulting in hiccups caused by the eardrum ringing, this time you can avoid hiccups when opening the mouth is too large, caused by temporomandibular joint disorders.