自发性耳源性颅腔积气少见，文献只报告2例。该文报道1例右乳突广泛气化，因行Valsalva咽鼓管吹张而产生自发耳源性颅腔积气的罕见病例：病人24岁，诉用力作Valsalva吹张后双眼出现盲点3周，头痛1周入院。眼底检查发现双侧轻度视乳头水肿。CT扫描示右侧乳突高度气化，乳突骨内 Spontaneous origin of cranial cavity gas is rare, the literature only 2 cases were reported. This article reports a case of extensive vaporization of the right mastoid, a rare case of spontaneous otic source of cranial gas due to vasalvaging of the Valsalva eustachian tube: the patient was 24 years old, his eyes blinded for 3 weeks after being forced to blow with Valsalva, Headache 1 week admission. Fundus examination found bilateral mild papilledema. The CT scan showed a high degree of vaporization of the mastoid to the right of the mastoid bone