Sinus pneumatic injuries are common in clinical practice, and in the early days, due to the rudimentary aviation equipment, and mostly seen in pilots, so it is also called aviation sinusitis. With the development of aviation science and aviation equipment, the incidence of pilots gradually decreased, while riding high-speed elevators, high-altitude recreational facilities, hyperbaric oxygen chamber treatment, snorkeling, etc. can become the cause of the development of the disease. The disease is very harmful to the patient’s body, so if the symptoms of the disease appear in daily life, it is also necessary to go to the hospital for CT examination as soon as possible to confirm the diagnosis and timely treatment. The CT examination of sinus pneumatic injury is as follows: Normal range: 1. congenital diseases of the ear. 2.Inflammatory diseases of the otorhinolaryngology. 3.Tumor of the otorhinolaryngology. 4.Otolaryngolaryngeal injury. Introduction of examination: CT examination of otorhinolaryngology is a method of examination of otorhinolaryngology by CT. Clinical significance: 1. For middle ear mastoiditis, especially when combined with cholesteatoma and bone destruction, the scope and degree can be clarified to provide surgical plan. 2. It can clarify the morphology, size, scope, invasion and metastasis of adjacent organs of benign and malignant tumors, and can make qualitative diagnosis of certain tumors. 3.It can be used for the review of tumor to observe the treatment effect and recurrence. 4.CT is the preferred examination method for laryngeal injury, and can identify hematoma and edema; it can also observe injury after radiotherapy – necrosis, fibrosis and atrophy, cavity narrowing. 5.CT can help to confirm the diagnosis of congenital diseases of the ear, especially congenital malformations of the middle ear and inner ear.