目的　分析感染性心内膜炎并发颅内出血的CT表现及发病机理。方法　搜集 5例感染性心内膜炎并发颅内出血的临床资料 ,5例均进行了CT平扫。结果　感染性心内膜炎并发颅内出血包括脑实质血肿、蛛网膜下腔出血和出血性梗塞。脑实质血肿可单发或多发 ,均位于皮层或皮层下区。结论　充分了解感染性心内膜炎并发颅内出血的发病机理有助于理解其CT表现 Objective To analyze CT manifestations and pathogenesis of intracranial hemorrhage complicated with infective endocarditis. Methods The clinical data of 5 cases of infective endocarditis complicated with intracranial hemorrhage were collected, and 5 cases underwent CT scan. Results Infective endocarditis with intracranial hemorrhage, including intraparenchymal hematoma, subarachnoid hemorrhage and hemorrhagic infarction. Brain parenchymal hematoma can be single or multiple, are located in the cortex or subcortical area. Conclusions A thorough understanding of the pathogenesis of ICH complicated with intracranial hemorrhage is helpful in understanding CT findings