Objective To explore the causes,treatment and preventive measures of cerebral hernia induced by continuous lumbar cistern drainage after craniotomy. Methods We analyzed the clinical data of 10 patients of cerebral hernia because of the continuous lumbar cistern drainage after craniotomy retrospectively. All patients were evaluated by CT before drainage,and repeated CT scan after cerebral hernia. Results All of the patients underwent continuous lumbar cistern drainage after craniotomy appeared cerebral herni...