This study was an attempt to examine the relationships among intrinsic leisure motivation, perceived freedom and leisure boredom of elementary school students. Three hundred and twenty six elementary school students were selected for this study. In order to better understand the causes of leisure boredom, we established a hypothesis model to prove the causal relationship among intrinsic leisure motivation, perceived freedom and leisure boredom. A self-administration questionnaire was employed for collecting data. According to data analysis, the findings of this study were summarized as following: 1. The senses of boredom in leisure which elementary school students perceived were low. In intrinsic leisure motivation and perceived freedom scales, "perceived competence" and "perceived leisure control" subscales which elementary school students perceived were the lowest, respectively. 2. There were significant difference between female and male students in intrinsic leisure motivation and perceived freedom, but not in leisure boredom. 3. There were significant negative relationship among intrinsic leisure motivation, perceived freedom and leisure boredom. 4. There were negative causal relationship among intrinsic leisure motivation, perceived freedom and leisure boredom. Discussions and implications were made following these findings.