The present study aimed to investigate the causal relationship between trait emotional intelligence and creative self-efficacy in gifted children and to explore the cross-temporal mediating role of self-concept between these two variables. A total of 177 gifted children aged 10-13 years (M = 11.29, SD = 0.68) were selected from an experimental class of gifted children in a middle school. The results showed that (1) the trait emotional intelligence and creative self-efficacy of gifted children decreased with age and that (2) trait emotional intelligence at time 1 (T1) positively and significantly predicted creative self-efficacy at time 2 (T2). The Self-Description Questionnaire was added at the second follow-up, which revealed that (3) T2 non-academic self-concept fully mediated the relationship between T1 trait emotional intelligence and T2 creative self-efficacy. This study revealed a lasting positive effect of trait emotional intelligence on the development of creative self-efficacy in gifted children. Additionally, trait emotional intelligence was found to indirectly influence creative self-efficacy through non-academic self-concept.