Abstract: Psychological characteristics are the key factors affecting athletes' live performance. The distant causes that affect live performance of 140 Chinese Olympic champions are focused on by the methods of literature review, questionnaire, interview, and machine learning algorithm combined with empirical knowledge. It is found that about 68.6% of the Chinese Olympic champions performed normally at the Olympic Games, while 27.8% needed extraordinary performance to win the championship. Besides, another 3.6% won the medal though they performed in error, and there was no difference between male and female. 4 variables of distant factors could be found to affect their live performance. The different event groups showed different inhibition and excitability. The education level is conducive to the formation of motor intelligence and the change of cognitive mode, the higher the education level, the better the live performance. The international competitions help accumulate competition experience and transform competition ability, 5 times being a turning point; but there are differences in event groups. The coaching team assists in improving the mental toughness of the live performance, which in turn supports better live performance.