Abstract: self-confidence is an indigenous personality concept, which rooted in Chinese traditional culture, and the study of this concept is very important to establish the Chinese personality knowledge system and practical fields. While the study of the concept of self-confidence confound great challenge, such as the confused with the concept of self-esteem, self-efficacy, self-supporting, and self-strengthening. In this paper, evidences that constitute the base of self-confidence were given. And the new evidences of mental function of self-confidence about self-regulation and mental health were discussed. Future study should focus on the structure, cognitive processes, and integrated all the approach and practical field

Key words: self-confidence, mental structure, personality trait