The cause of sudden deafness is unknown. Common treatments include hyperbaric oxygen therapy, blood circulation improvement, nerve-nourishing drugs, corticosteroid therapy, and nuclear medicine has its unique efficacy in treating sudden deafness. Why can radionuclides treat sudden deafness? The main use of nuclear medicine radionuclide low-dose radiation effect, low-dose radiation has the following human effects: 1. low-dose radiation can improve local tissue blood circulation, stabilize the cell membrane quickly 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 cells repair, which are incomparable to hyperbaric oxygen, blood circulation improving drugs, nutritional nerve drugs and thrombolytic therapy. Radionuclide treatment 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.