I. What is occupational noise deafness? Occupational noise deafness is a progressive acoustic hearing impairment that occurs when people are exposed to productive noise for a long time during work. When acute hearing damage caused by strong noise above 140 dB is called blast deafness. Hearing damage caused by long-term exposure to high-intensity noise is called chronic noise deafness. Patients may have clinical symptoms such as tympanic membrane perforation, inner ear bleeding, ear pain, tinnitus, vertigo, deafness, etc., as well as different symptoms of the nervous system, cardiovascular system, digestive system and endocrine system and other systemic multiple systems. The diagnosis of occupational noise deafness is made based on the average hearing threshold of better whispering frequency (500Hz, 1,000Hz, 2,000Hz). Mild noise deafness: 26dB — 40dB (HL) Moderate noise deafness: 41dB — 55dB (HL) Severe noise deafness: ≥56dB (HL) III. What should I do if I have occupational noise deafness? If you suspect that you are suffering from occupational noise deafness, please follow the steps below: 1.Apply to the enterprise where you work for occupational noise deafness diagnosis. 2.Obtain documents to prove occupational exposure to noise from your workplace. 3.Determine the diagnosis: You can go to a medical institution qualified to diagnose occupational noise deafness for occupational disease diagnosis. 4.If you are determined to be suffering from occupational noise deafness, you have the right to enjoy the treatment of occupational diseases as stipulated by the state; the enterprise shall arrange for treatment, rehabilitation and regular examination in accordance with the relevant state regulations, and shall give appropriate post allowance to those who are not suitable for the original work.