目的 :介绍婴儿晚发性vitK缺乏症早期诊治及其预防的重要性。方法 :选择 186例婴儿晚发性vitK缺乏症患者 ,分析该病病因、临床特征、死亡率与就诊时间的关系。结果 :2 4h之内就诊者 2 4人 ,全部痊愈 ,～ 48h就诊者78例 ,死亡 2例 (占 2 .5 6 % ) ,～ 72h就诊者 36例 ,死亡 12例 (占 33 .33 % ) ,超过 72h就诊者 48例 ,死亡 2 8例 (占5 8.3% )。结论 :该病早期诊治能降低死亡率 ,而该病是可以预防的 ,提出对所有新生儿生后常规补充vitK以预防本病的发生 Objective: To introduce the importance of early diagnosis and treatment of infantile vitil deficiency and its prevention. Methods: A total of 186 infants with vitV deficiency were enrolled in this study. The etiology, clinical features, mortality and time of treatment were analyzed. Results: 24 patients were treated within 24 hours and all were cured. Among them, 78 patients were treated at ~ 48h, 2 patients died (2. 56%), 36 patients were treated at ~ 72h, 12 patients died (33.33% ), More than 72h treatment 48 cases, 28 cases of death (accounting for 8.3%). Conclusion: Early diagnosis and treatment of the disease can reduce the mortality rate, and the disease is preventable. It is proposed to routinely supplement vitamin K to prevent the occurrence of this disease