Objectives: To discuss the bleeding mechanisms after removing a medulla oblongata hemangioblastoma. Methods: A 42-year-old male patient was diagnosed with a medulla oblongata hemangioblastoma. Preoperative cranial magnetic resonance imaging, computed tomography angiography and post-surgery computed tomography were completed during clinical procedure. We also reviewed the related literatures. Results: The preoperative computed tomography angiography did not demonstrate any intracranial aneurysm. But, the patient had a fatal subarachnoid hemorrhage with ventricular hemorrhage 4 hours after surgery following the post-surgery computed tomography. Conclusions: Subarachnoid hemorrhage after surgery of the medulla oblongata hemangioblastoma is very rare. Delayed postoperative hemorrhage seems the most reasonable explanation of Subarachnoid hemorrhage in our case. Objectives: To discuss the bleeding mechanisms after removing medulla oblongata hemangioblastoma. Methods: A 42-year-old male patient was diagnosed with medulla oblongata hemangioblastoma. Preoperative cranial magnetic resonance imaging, computed tomography angiography and post-surgery computed tomography were completed during But the patient had a fatal subarachnoid hemorrhage with ventricular hemorrhage 4 hours after surgery the following post-surgery computed tomography. Conclusions: Subarachnoid hemorrhage after surgery of the medulla oblongata hemangioblastoma is very rare. Delayed postoperative hemorrhage seems the most reasonable cause of Subarachnoid hemorrhage in our case.