Buzzing in the head is called tinnitus, which may be a physiological condition, or it may be caused by vegetative nerve dysfunction, insufficient blood supply to the brain, or ear diseases. 1. Physiological conditions: Tinnitus can occur when brain cells do not get enough rest due to lack of sleep or excessive stress, and the symptoms can be relieved by improving sleep and reducing stress. 2. Plant nervous system dysfunction: this condition is usually related to the emotional abnormalities of the affected people, such as anxiety, nervousness, depression, etc., which can cause poor sleep quality, insomnia, etc., leading to plant nervous system dysfunction, clinical dizziness, headache, tinnitus and other symptoms. 3. Insufficient cerebral blood supply: this condition is common in people suffering from hypertension, diabetes, high blood cholesterol and other underlying diseases, which can cause hardening and narrowing of cerebral arteries, leading to insufficient cerebral blood supply, clinical manifestations of dizziness, depression, tinnitus and so on. 4. Ear diseases: such as middle ear infection, middle ear blockage, Meniere’s disease, eustachian tube blockage, tympanic membrane perforation, acoustic neuroma and other diseases, can lead to tinnitus symptoms. If tinnitus symptoms occur, the patient needs to go to the neurology department or ENT department of the hospital in time for relevant examinations to clarify the cause of the disease and then carry out targeted treatment.