【目的】　探讨婴儿VitK缺乏性出血症的有效预防途径。　【方法】　乳母口服VitK1每 10天 1次 ,共10次。　【结果】　干预组VitK缺乏性出血症发生率明显低于未干预组 (P <0 .0 1)。　【结论】　乳母口服VitK1片能有效地预防典型及晚发性VitK缺乏性出血症 【Objective】 To explore the effective preventive ways of infantile VitK deficiency hemorrhagic disease. 【Method】 Vitamycin lactate oral once every 10 days, a total of 10 times. 【Results】 The incidence of VitK deficiency hemorrhage in intervention group was significantly lower than that in non-intervention group (P <0.01). 【Conclusion】 The VitK1 tablets can effectively prevent the typical and late VitK deficiency hemorrhagic disease