This study examined the effects of children′s personality traits on children′s emotional intelligence. The Subjects were 1060 5th graders of elementary schools located in four cities of Seoul, Suwon, Daejeon, and Daegu, Korea. The results indicated that girls in general showed more of the positive personality traits and higher emotional intelligence(EI) than boys did. Reflectiveness and sociability among seven personality factors had positive effects on all of the four EI factors. Responsibility factor of personality positively affected "self-regulation and emotion utilization" of both boys and girls, while activity factor had a positive effect on "other-regulation and self-expression". Stability had a possitive effect on "self-regulation and emotion utilization" among girls, whereas superiority had a negative effect on "empathy" among boys.