The purpose of this study was to understand the current situation of the emotional intelligence, life adaptation and cyberbullying cognition ability of fifth graders and sixth graders, then to explore the relationships among the emotional intelligence, life adaptation and cyberbullying cognition. This study was based on a survey research, and the higher grade students of elementary schools in Taoyuan City were the subjects of this research. The data were analyzed by statistic methods of descriptive statistics, t-test, One-way ANOVA, Pearson Product-moment correlation. The main conclusions were as follows: 1. The emotional intelligence, life adaptation and cyberbullying cognition of elementary school students were above the average level. 2. There were significant differences on the cyberbullying cognition in the different genders, grades, time and places of internet use for the elementary school students. 3. There were positive correlations among the emotional intelligence, life adaptation and cyberbullying cognition.