Sudden deafness is a common disease with unknown etiology. The possible causes are: 1) circulatory disorders; 2) autoimmune reactions; 3) viral infections, etc. The common clinical treatments include corticosteroid therapy, hyperbaric oxygen therapy, and drugs to improve circulatory metabolism, etc. After these treatments, patients may recover their hearing, but most of them lose their hearing due to ineffective treatment. What makes nuclear medicine unique in the treatment of sudden deafness and more effective than all treatments? It starts from the low-dose radiation effect, which means that after low-dose radiation irradiation, the body produces an adaptive response to the radiation and inhibits the inflammatory cell infiltration of the body, stabilizes the mast cell degranulation so that the inflammatory chain reaction caused by degranulation is inhibited, stabilizes the cell membrane and eliminates local edema, thus greatly reducing local inflammation, while low-dose radiation improves local blood circulation, activates At the same time, low-dose radiation can improve local blood circulation, activate the repair function of damaged cells, suppress local cellular and humoral immunity, and clinical practice also proves that low-dose radiation has the effect of sterilization and virus extinction. Low-dose radiation can also repair damaged vascular endothelial cells and reduce platelet adhesion agglutination, thus inhibiting the production of adhesion thrombus. All these reactions are beneficial for the recovery of sudden deafness.