Buzzing in the ears while sleeping may be due to neurogenic tinnitus, abnormal opening of the eustachian tube, ear canal cerumen, ear canal cerumen, and so on, as follows: First, neurogenic tinnitus: this is a more common clinical cause, and may be more pronounced when the patient is sleeping quietly. Neurological tinnitus is related to insufficient blood supply to the inner ear, vasospasm in the inner ear and other triggers, and sometimes it is easily accompanied by hearing loss. Clinically, for this condition, if the onset is short, it is recommended to go to the ENT clinic as soon as possible to receive comprehensive treatment and treatment such as vasodilation, nerve nutrition and hormone. Second, abnormal opening of the eustachian tube: Patients with abnormal opening of the eustachian tube can experience tinnitus at the same frequency as breathing during sleep. Third, ear canal cerumen: Some patients have ear canal cerumen, which irritates the eardrum and can cause buzzing sound in the ear. Fourth, secretory otitis media: Some patients have secretory otitis media, and the tympanic membrane is invaginated, and they can also have low-pitched tinnitus, which may be clinically associated with ear pain, stuffiness, and other related conditions.