Emotions are internal data that influence behavior and motivation and are a key factor in many psychological disorders; hence, emotional incoherence is observable across behavioral disorders. The present descriptive study aimed to determine the psychometric properties of the Coping with Children's Negative Emotions Scale. The statistical population consisted of all parents of children aged 3 to 7 in Mashhad during the 2020–2021 academic year. Using Cochran's formula, a sample size of 370 parents was determined and selected via convenience sampling; they completed the Coping with Children's Negative Emotions Questionnaire and the Cognitive Emotion Regulation Questionnaire. Data were analyzed using exploratory factor analysis, Cronbach's alpha, test–retest reliability, and convergent and divergent validity, with SPSS software. The exploratory factor analysis yielded 7 factors with eigenvalues greater than one, jointly explaining 79% of the total variance. The reliability of the scale, assessed via Cronbach's alpha, exceeded 0.70 for all subscales of parents' reactions to children's negative emotions, and the overall reliability coefficient was 0.88. Convergent and divergent validity were confirmed through correlations with the Cognitive Emotion Regulation Questionnaire (CERQ). It can therefore be concluded that the Coping with Children's Negative Emotions Scale has relatively good validity and reliability in Iranian samples and can serve as a suitable instrument for research in this field.