Sudden deafness is a sudden, unexplained sensorineural hearing loss of ≥20 dBHL in at least two adjacent frequencies within 72 h. It may be accompanied by tinnitus, a sense of ear congestion, vertigo and other Symptoms.Stellate ganglion block increases the blood flow and blood velocity in the inner ear, keeping the body's vegetative, endocrine and immune functions normal.The branches of the facial and linguopharyngeal nerves are connected to the inner ear, and local injection can nourish the nerves and improve local circulation.

Inclusion Criteria:

• Meet the diagnostic criteria for sudden deafness established by the Editorial Board of the Chinese Journal of Otolaryngology, Head and Neck Surgery and the Chinese Society of Otolaryngology, Head and Neck Surgery
• Age 18 to 80 years
• ASA classification Ⅰ~Ⅲ grade

Exclusion Criteria:

• Acoustic conductance test, vestibular function test, cranial MRI, etc. suggest organic disease
• People with coagulation disorders or on anticoagulation therapy
• Infection at the puncture site
• Severe systemic diseases that cannot cooperate with treatment