Abstract: Both an evaluative Implicit Association Test (IAT) and an affective one were designed to measure implicit self-esteem.90 undergraduates took both IATs and also accepted three explicit self-esteem measures: the Self-Esteem Scale(SES,Rosenberg,1965),the Feeling of Inadequacy Scale(FIS, Janis, Field,1959),the Self-Esteem Inventory(SEI, Coopersmith ,1967) . Then Confirmatory Factor Analysis was carried out to explore the structure of implicit self-esteem and explicit self-esteem. The result showed: (1) the effect of Implicit Association Test was significant which means that eastern individuals hold a positive evaluation to themselves unconciously and IAT was valid to detect the effect; (2) Implicit self-esteem and explicit self-esteem were different traits , the correlation between them was positive and low

Key words: implicit self-esteem, explicit self-esteem, Implicit Association Test (IAT)