High-frequency hearing threshold is also known as high-frequency hearing loss, the sensitivity of hearing is reduced, and the volume needs to be raised to be heard. Normal human hearing range is 500-2000Hz, more than 4000Hz is high frequency. The first manifestation of high-frequency hearing loss has high-pitched tinnitus, which is commonly caused by vasospasm, micro-thrombus blockage of blood vessels, and degradation of hair cell function. It is commonly caused by prolonged noise interference, or sudden exposure to noise, ageing cochlear function decline, and so on. Speech communication is generally of medium frequency, so normal communication is usually not affected in the early stages of the disease. As the disease progresses, the degree of hearing loss worsens and even deafness occurs. Hearing loss is usually applied to improve the circulation of nutritive nerve drugs, commonly used drugs are ginkgo biloba extract, methylcobalamin tablets and vitamin B1. Hyperbaric oxygen chamber treatment is also available. If there is tinnitus and other discomforts, please consult a doctor in time for pure tone hearing threshold examination and targeted treatment.