Introduction: Emotional Regulation Checklist is frequently used to determine emotional developments of children by teacher and parents of children. The purpose of this study was to examining the Psychometric Properties of "Emotional Regulation Check List" for 4-5 years age in preschool children. Method: The sample of the research was composed of 600 preschool children, who are all 4-5 years old, from 13 different public schools in Eskisehir (Turkey). This study is a quantitative and relational study. The data were collected by "Emotional Regulation Check List" and "Pre-School Social Competence and Behavior Evaluation Inventory-Teacher Form." Results: The factor structure of the scale was tested through confirmatory factor analysis (CFA) and the results indicate that the original factor model did not fit the data. Exploratory factor analysis (EFA) results differed from the original study in that item twelve took place in the first factor. CFA results revealed an acceptable model fit and suggested that two factor model was confirmed with the second dataset. Cronbach Alpha internal consistency coefficients were acceptable for subscales. Positive and negative medium level meaningful relations were found between emotion regulation checklist sub-factors and social competence and behavior the sub-factors. Discussion and Conclusion: As a result of, it can be concluded that scale is a reliable and valid measurement tool for measure the emotion regulation behaviors of 4-5-year-old children. The findings of this study indicate the need to Education programmes developed to increase emotinal regulation of children, and their efficiency evaluated via this assessment instruments. [Paper presented at the annual International Symposium on Economics and Social Science Conference (3rd, Tokyo, Japan, Jul 22-24, 2015).]