Neonatal hemorrhagic disease can cause serious adverse consequences, so how can this disease be avoided? The prevention of this disease is not difficult. Newborns need to be supplemented with vitamin K1 at birth and for 3 months after birth so that neonatal hemorrhage can be completely eliminated. The specific method of administration is intramuscular vitamin K1 1mg at birth or oral vitamin K1 2mg once, followed by the same dose orally every 10 days until 3 months of age. In the case of exclusively breastfed infants it is recommended that mothers take oral vitamin K1 (5mg/day) to increase the vitamin K1 level in the milk. It has also been studied that giving pregnant women oral vitamin K1 before delivery can increase the level of vitamin K1 in cord blood and may prevent vitamin K1 deficiency in newborns.