目的　研究晚发性维生素K缺乏症颅内出血的临床CT表现。方法　收集临床证实晚发性维生素K缺乏症颅内出血 5 6例 ,男 42例 ,女 14例 ,年龄 2 8～ 60d ,所有病例均做了头颅CT平扫。结果　蛛网膜下腔出血 3 3例 ,硬膜下出血 3 2例 ,脑实质出血 19例 ,脑室内出血 8例。出血量 2～ 15 0ml,单部位出血 2 6例 ,多部位混合出血 3 0例。脑水肿 16例。结论　VitK缺乏所致颅内晚发出血以蛛网膜下腔和硬膜下出血多见 ,多部位混合性出血多见。 Objective To study the clinical CT manifestations of intracranial hemorrhage in patients with late onset vitamin K deficiency. Methods Fifty-six cases of delayed onset vitamin K deficiency intracranial hemorrhage were collected, including 42 males and 14 females, ranging in age from 28 days to 60 days. All patients underwent CT scan. Results 33 cases of subarachnoid hemorrhage, 32 cases of subdural hemorrhage, 19 cases of cerebral parenchymal hemorrhage, intraventricular hemorrhage in 8 cases. Bleeding volume 2 ~ 15 0ml, single-site hemorrhage 26 cases, multi-site mixed bleeding 30 cases. 16 cases of cerebral edema. Conclusion Vitra lack of intracranial hemorrhage caused by subarachnoid and subdural hemorrhage more common, multi-site mixed bleeding more common.