The aim of this study is to explore the effect size (ES) of the relationship between emotional intelligence and high-level thinking within 17 master's & doctoral dissertations and periodicals with meta-analysis in Taiwan. It found a positive relationship between emotional intelligence and high-level thinking. As for the moderator variables on theoretical aspect, the ES of elementary and junior high students was higher than senior high students, undergraduates and employees; the ES of 2007 to 2009 studies was smaller than previous studies; the ES of critical thinking, creativity and innovative behavior were smaller than problem solving. Regarding the methodological aspect, the ES of single-country samples was higher than mixed-country samples; the ES of large samples was smaller than the small samples; the ES of high random sampling was smaller than low random sampling. According to these results, some conclusions and suggestions were proposed for practical applications and future research.