Flight personnel (including pilots and other crew members) and low-pressure cabin staff exposed to the aviation environment should be closely observed when symptoms such as ear pain, hearing loss, sinus area pain, eye swelling and pain, vertigo, muscle and joint pain, chest pain, cough, headache, and breathing difficulties occur. Changes in air pressure in the aviation flight environment may cause the following diseases to occur in flight personnel (including pilots and crew members) exposed to the aviation flight environment and staff in the low-pressure cabin: 1. Aviation otitis media Symptoms such as ear pressure pain during flight descent or low-pressure cabin descent, and examination reveals congestion of the eardrum. 2.Aeronautical sinusitis During flight descent or low-pressure cabin descent, symptoms such as pain in the sinus area and changes in the sinus are found by X-ray or CT. 3.Variable pressure vertigo Transient vertigo occurs during flight or low pressure exposure, and low pressure cabin examination can reproduce vertigo symptoms, which may be accompanied by neurological deafness. 4.High altitude decompression sickness usually occurs at altitudes above 8000 meters, with characteristic symptoms of high altitude decompression sickness: pruritus, erythema, joint pain, and symptoms disappear when descending to altitude or returning to the ground. Flexion, paralysis, coma, shock, gas choking, sudden death, etc. may occur. 5.Pulmonary air pressure injury Appears as chest discomfort, chest pain, cough and other respiratory symptoms, hemoptysis, dyspnea, loss of consciousness, pulmonary hemorrhage, interstitial emphysema or pneumothorax. 6.Noise deafness. Long-term exposure to noise in aviation operations can cause hearing loss.