oth self-efficacy and perfectionism are quite common in gifted children. The aim of this study is to examine the relationship between the perfectionism and self-efficacy of gifted children. In this study, Child and Adolescent Perfectionism Scale and Self-Efficacy Scale for Children will be used as data collection tools. The research was carried out by scanning design, one of the quantitative research methods. While selecting the sample of the study, criterion sampling, which is the purposeful sampling type, was used. In the study, the sampling criteria of the students were considered as BİLSEM students, who were diagnosed as being gifted. Participation in the study is entirely voluntary. The study group of the research consists of 507 students (3rd, 4th, 5th, 6th, 7th and 8th grades) studying in BİLSEM (Science and Art Centers) in various provinces of Turkey. The obtained data were analyzed with the descriptive and complementary statistical method. While there is no significant difference in the child and adolescent perfectionism levels of gifted students according to gender and the independent variables of the period they studied at BİLSEM, there is a significant difference according to the independent variables of school type, grade levels, number of siblings and ranking among siblings. While there is no significant differentiation in the self-efficacy levels of gifted students according to gender, school type and number of siblings independent variables, there is a significant difference in class levels, periods of study in BİLSEM, and ranking independent variables between siblings. It was concluded that there was no significant and positive relationship between the answers given by gifted students to the Child and Adolescent Perfectionism Scale and the answers they gave to the Children's Self-Efficacy Scale.