198 2年～ 1997年我们共收治晚发性 V it K缺乏症 2 2 8例。本病以其颅内出血率、死亡率和致残率高而倍受儿科界关注。但在其预防对策上国内迄今未制定统一常规 [1 ]。我们旨在通过对 2 2 8例病因、临床特征分析基础上 ,提出对 2周～ 3月的婴儿常规补充 Vit K以预防本病的发生 198 2 years to 1997 we treated a total of 228 cases of late-onset V it K deficiency. The disease with its intracranial hemorrhage, mortality and high morbidity and much attention of the pediatric profession. However, there is no unified convention on prevention measures in China so far [1]. Based on the analysis of 228 etiological and clinical features, we propose to routinely supplement Vit K with infants from 2 weeks to 3 months to prevent the occurrence of this disease