【Abstract】 Objective To provide prevention methods for clinical diagnosis and treatment by detecting the etiology of youth hemorrhagic stroke. Methods 240 patients with youth cerebral hemorrhage from Department of Neurology, The First Affiliated Hospital of XI’an Jiaotong University were taken and analyzed．Results There were 184 cases (7667％) with definite etiology, including essential hypertension (2417％), cerebral arteriovenous malformation (1833％), intracranialaneurysm (1417％), blood system diseases (625％), tumor stroke(167％), cavernous hemangioma (333％), puerperal pregnancy(083％), moyamoya disease (584％), venous sinus thrombosis (083％), dural arteriovenous fistula (083％) and connective tissue disease (042％). There were 56 cases with unknown reasons (2333％)．Conclusion Hypertension is the main etiology of youth cerebral hemorrhage. The aneurysm and arteriovenous malformation were the second cause．