Sudden deafness is a common and frequent disease with unknown etiology, and the widely recognized etiologies are: 1, viral infection theory, virus causes cochlear Yan or membrane vaginitis, leading to deafness; 2, deafness caused by inner ear circulation disorder, high oxygen consumption of inner ear hair cells, poor tolerance to hypoxia, and poor blood flow to the inner ear can lead to reduced hair cell function and hearing loss; 3, autoimmune disease, which believes that inner ear tissue is autoantigen, autoimmune reaction leads to impaired inner ear function, resulting in hearing loss; 3. There is also the theory of membrane rupture and the theory of metabolic disorders. All the above theories are uncertain. Sudden deafness has a tendency to heal itself, and the traditional treatment of sudden deafness is mostly comprehensive, with glucocorticoid therapy, thrombolytic therapy, neurotrophic drug therapy, and physiotherapy mainly with hyperbaric oxygen therapy. It is generally accepted that the treatment of sudden deafness is more effective within 7-10 days after the onset of the disease, but beyond the optimal treatment period, the cure rate is greatly reduced. The main mechanism of hyperbaric oxygen therapy for sudden deafness is to increase the oxygen content of the inner ear and to remove harmful free radicals, which is usually combined with drugs to improve blood circulation. Why can radionuclides treat sudden deafness? This is mainly due to the low-dose radiation effect of radionuclides acting on the body. Low-dose radiation has the following human effects: 1. Low-dose radiation can improve local tissue blood circulation and stabilize cell membranes to rapidly eliminate local edema. 2, inhibit immune response: (1) inhibit the formation of immune complexes, scavenging free radicals, protect the body superoxide dismutase (SOD) activity, prevent free radicals on the body damage, repair damaged tissue. (2) Inhibit prostaglandin E production and release, thus inhibiting leukocyte wandering and acting as an anti-inflammatory agent. (3) inhibit the production of inflammatory mediators and IL-1, and regulate the body’s immune function. (3) Low-dose radiation can activate certain signaling systems, promote genes and gene products related to radiation tolerance, reduce free radical production, improve the antioxidant damage system, and some studies have shown that low or moderate doses of radiation have a stimulating effect of promoting DNA repair. 4, radiation can inhibit the virus or even kill the virus, clinically has been successfully used to treat viral infections such as: common warts, acute warts, herpes zoster and other diseases 5, bactericidal effect 6, non-specific anti-inflammatory effect, glucocorticoid-like effect, and the effect is stronger than glucocorticoids, but no glucocorticoid side effects. It can be seen that radionuclide therapy alone has all the clinical elements of comprehensive treatment for sudden deafness, especially its stabilization of cell membranes, rapid elimination of local edema and its strong non-specific anti-inflammatory effect and stimulation of damaged cell repair, which are incomparable to hyperbaric oxygen, blood circulation improving drugs, nerve nutrition drugs and thrombolytic therapy. Radionuclide therapy for sudden deafness has the following characteristics: 1. Hearing recovery is fast, generally within one minute after receiving the first treatment, hearing will be improved to varying degrees, and the efficiency is over 90%. 2.Every time you receive treatment, your hearing will be improved to different degrees. 3.It is effective for dizziness, malignancy and vomiting caused by sudden deafness, and these symptoms will be improved significantly or even disappear on the day after receiving treatment. 4.No pain, no trauma, no adverse side effects.