The Purpose of the Present study was to investigate the psychometric properties of the persian version of the children's self-regulation assessment scale. The present study was a cross-sectional validation study conducted in Isfahan. the statistical population in this research included all children aged 3 to 6 years in preschool centers in Isfahan during the academic year 1403-1404. From this population, 330 children (300 children without behavioral-emotional problems and 30 children with behavioral-emotional problems) were selected using a purposeful sampling method. The research instrument included a 12-item children's self-regulation Assessment Scale, completed by preschool teachers. The validity of the scale was examined using content validity, face validity, exploratory factor analysis, confirmatory factor analysis, and item analysis. The reliability of the scale was also investigated using internal consistency methods and split-half reliability. Data analysis was performed using SPSS and Amos version 26 software. the results of the exploratory factor analysis indicated a general factor with an eigenvalue greater than 1, accounting for 71.781% of the variance in the scale. The findings from confirmatory factor analysis also well supported the 12-item, one-factor model. Furthermore, the split-half reliability coefficient for the first half of the data (6 items) was 0.932, and for the second half of the data (6 items) was 0.926, with a split-half correlation of 0.765. These findings indicate desirable internal consistency for assessing children's self-regulation. The Cronbach's alpha coefficient for the entire scale was 0.931. According to the results of first-order confirmatory factor analysis, all indices, including PNFI=0.76, CMIN/DF=0/465, RMSEA=0.01, IFI=0.99, CFI=0.99, and GFI=0.98, confirmed the fit of the one-factor model. Additionally, a comparison of Self-Regulation between children with and without Behavioral-Emotional Problems showed that the level of self-regulation in children without behavioral-emotional problems was higher than in children with Behavioral-Emotional Problems. the results indicated that the Persian version of the children's self-regulation assessment scale possesses the necessary validity and reliability and can be used as a desirable tool for assessing children's self-regulation.