In order to explore the relationship between mindfulness and self-confidence of sports state and reveal
the mechanism of emotion regulation self-efficacy in sports competition between them, 215 college students of
sport majors were investigated by questionnaire. Results: Mindfulness, emotion regulation self-efficacy in sports
competition and self-confidence of sports state were positively correlated; Mindfulness significantly positively
predicts self-confidence of sports state, the self-efficacy of expressing positive emotion and the self-efficacy of
managing negative emotion play a completely mediating role between mindfulness and self-confidence of sports
state. Conclusion: The influence of mindfulness on self-confidence of sports state is completely through emotion
regulation self-efficacy in sports competition. In the promotion of sports performance, mindfulness training
can improve mindfulness level, reduce negative emotions, promote positive emotions, and then enhance self-confidence of sports state.