The effectiveness of treatment for sudden deafness depends on the timing of treatment, the medication used and the type of sudden deafness. If the onset of deafness is treated within a week, low frequency deafness should be treated within 2 days. For high frequency deafness, treatment may take longer, perhaps 3-4 weeks, to be effective. The medications used to treat sudden deafness are usually microcirculatory and neurotrophic, with the possibility of using glucocorticoids. The duration of treatment may vary depending on the treatment plan, and the time to effect may not be the same. It is important to treat sudden deafness in a timely manner. Sudden deafness has a higher success rate when treated within a week, and it is possible that treatment may be ineffective if it is too late. Therefore, how long it takes for sudden deafness treatment to take effect depends on the individual, the disease and the treatment plan. The cause of sudden deafness is not clear, so once detected it should be treated promptly, and medication within 24 hours is the key. The treatment is carried out by infusion and hyperbaric oxygen therapy, as well as the application of nutritional drugs and hormonal drugs. Usually, we should pay attention to rest and relaxation, ensure sleep, and have a light diet.