Noise is usually harmful to the human body in the following ways: 1, serious impact on the central nervous function, resulting in neurological weakness and dysfunction of the nervous system, for example, long-term in the noise will lead to insomnia, dreaminess, poor rest and sleep conditions, or poor quality of rest and sleep, the emergence of deep sleep phase shortened, shallow sleep phase prolonged or neurological headache, migraine, insomnia, dreaminess and other clinical symptoms and The symptoms of inadequate blood supply to the heart can be caused by long-term noise hazards, which can lead to coronary artery ischemia and transient vasospasm, resulting in chest tightness, shortness of breath, palpitations, precordial discomfort, etc.; 3. Noise can also cause irreversible damage to the ear canal and auditory system, for example, leading to neurological tinnitus and even neurological deafness.