Patients and method：284 VLBWI were admitted in our NICU from January 2003 to December 2006. IVH was present in 24 cases. Six cases had progressed to posthemorrhagic hydrocephalus（PHH）and the Ommaya reservoir operation was needed.
Treatment policy in this department to intraventricular hemorrhage：Ommaya reservoir is inserted for cases of Papile classification Grade Ⅲ or more and posthemorrhagic hydrocephalus（PHH）. Lumbar puncture is not applied to reduce pressure of hydrocephalus.
Result：The average gestational weeks and birth weight of PHH 6cases were, respectively, 26.4±2.6 weeks, 902±316g. The average time of diagnosis of the intraventricular hemorrhage was 2.8days after birth. Four of 6 cases required a change to ventriculo-peritoneal shunt（V-P shunt）from Ommaya reservoir. The psychomotor development of two cases who were able to be stopped Ommaya reservoir was excellent. However, in 3 V-P shunt cases there was severe psychomotor retardation. There is one V-P shunt case who received only observation.
Consideration：There is no clear standard as to when the treatment method should be administered for intraventricular hemorrhage. Prognosis of VLBWI who need a V-P Shunt is not satisfactory and the dicision of the appropriate surgical treatment time requires further study.
