Left ear thrombosis is clinically called sudden deafness, which is mainly due to the blockage of the internal auditory artery by thrombus embolus, causing the hearing nerve damage due to the incomplete blood supply to the internal auditory artery. The main treatment is the use of anticoagulation, blood activation, circulation improvement and nerve nourishing drugs, together with high-dose hormone shock therapy, generally commonly used clinical drugs such as Dongling Kebolase, together with Jinadu plus the use of nerve nourishing drugs such as methylcobalamin tablets taken orally, and can be combined with hyperbaric oxygen therapy if possible.