The authors analyzed the citation of Journal of Korean Neurosurgical Society, based on Korean Medical Citation Index[KoMCI] from 2000 to 2004. In this analysis the impact factor showed no significant further improvement in 2004 compared to 2003. However, the number of received citations was increased remarkably. If this increase can be kept up, it may have positive effect on impact factors. In the era of open competition of medical journals, the awareness and cooperations of every members of Korean Neurosurgical Society is essential for improvement of the status of our journal in a steady trend.