The purpose of this study was to investigate the diabolo players' state anxiety, flow experience and sport performance. The questionnaire was adopted as the study tool, which included competitive state anxiety, flow experience and sport performance. There is a total of 211 questionnaires. After collecting the data, canonical analysis and multiple regression analysis were used to analyze the data. The results were as follows: 1. "Self-Confidence" of competitive state anxiety and "Skill-challenge balance" of flow experience were highly positively correlated, "Self-Confidence" of competitive state anxiety and "Focus and controls", "Loss of self", "Acting without thinking" and "Get clear feedback" of flow experience were moderately positively correlated; "Cognitive anxiety" and "Somatic anxiety" of competitive state anxiety and "Loss of self" of flow experience were moderately negatively correlated, "Cognitive anxiety" and "Somatic anxiety" of competitive state anxiety and "Acting without thinking" and "Transformation of time" of flow experience were moderately positively correlated.2. "Self-Confidence" of competitive state anxiety and "Focus and controls" of flow experience could positively predict the sport performance of the players. Therefore, in order to make the players have a good performance, coaches have to give the players faith, and the players have to sure their own movement arrangements.