本文报告4例特发性颅内血肿。病人的临床特点是:较年轻,无脑外伤史,无高血压或动脉硬化,无明显的颅内动脉瘤及脑血管畸形。起病急骤,颅内压很快升高,并导致脑疝形成。一经确诊,应立即手术治疗。 This article reports 4 cases of idiopathic intracranial hematoma. The clinical features of patients are: younger, no history of brain injury, no high blood pressure or arteriosclerosis, no obvious intracranial aneurysm and cerebral vascular malformations. Rapid onset, rapid increase in intracranial pressure, and lead to the formation of herniation. Once diagnosed, surgery should be immediately.