We report two pediatric patients with rupture of cerebral aneurysm developing subarachnoid hemorrhage. These two patients complained of headache and vomiting. Patient 1 was a 15-year-old girl. Cranial computed tomography (CT) showed a high density area in the left sylvian fissure, suggesting subarachnoid hemorrhage. Left carotid arteriography revealed an aneurysm at the left internal carotid artery bifurcation. Surgical pathology showed a saccular type aneurysm with disappearance of internal elastic membrane. Patient 2 was a 14-year-old girl. Cranial CT exhibited a high density area in the basal cistern and hematoma in the right frontal lobe, penetrating to the right lateral ventricle. Right carotid arteriography showed a right anterior cerebral aneurysm in the right anterior cerebral artery. Both patients underwent craniotomy and trapping successfully, and their subsequent clinical courses were uneventful.