Tinnitus, the sound of cicadas chirping 24 hours a day, the common causes are neurogenic tinnitus, cerumen embolism, insufficient blood supply to the inner ear. 1. Neurogenic tinnitus: It is mostly seen in workers who work in a noisy environment for a long time. Excessive noise damages the auditory system, causing damage to the cochlea hair cells and symptoms of neurogenic tinnitus, which is like the sound of cicadas chirping in the ears, accompanied by hearing loss. 2. Cerumen impaction: Cerumen impaction is mainly caused by excessive cerumen or untimely cleaning, mainly manifested as itching, stuffy feeling in the ear, hearing loss, excessive earwax compression of the tympanic membrane will appear tinnitus symptoms, which can be manifested as cicadas chirping. When secondary infection occurs, it will be accompanied by ear pain, headache and other symptoms. 3. Insufficient blood supply to the inner ear: cervical spondylosis, tympanitis, hypertension, diabetes, etc. can lead to insufficient blood supply to the inner ear, which is mainly manifested as tinnitus, stuffy ears, hearing loss, which can be accompanied by vertigo. If the tinnitus cicada sound 24 hours a day, it is recommended to go to the hospital as soon as possible, under the guidance of the doctor to clarify the cause of the disease, for the cause of the treatment.