Abstract: China's preparation for the 2024 Paris Olympics is facing a complex and changing situation at home and abroad for, on the one hand, the Paris participation cycle is compressed into a "4-1" model, athletes' training and preparation rhythm is passively adjusted, the level of leading competitive sports nations in key events has improved significantly, and the competition in the Olympic Games has become fiercer; on the other hand, the development of China's competitive strength in sports events is not balanced, and its preparation for key events and key parts is not sufficient. In addition, the changes in the rules and events of the Paris Olympic Games have greatly affected China's participation in some events. In spite of these challenges, China has built key event groups with advantageous events as the main body, and its preparation mode based on the whole nation system has institutional advantages. Besides, the level of scientific training and competition has been continuously improved through scientific and technological innovations, and finally the change in the world situation and the adjustment of the Olympic rules affect the participation pattern, which is conducive to China's training and preparation. The study proposes that China can give full play to the "new type of whole nation system" to integrate various resources to strengthen the prevention and control of training and preparation risks, and the comprehensive guarantee of competition; strengthen the research and judgment of the rules of the Paris Olympic Games and information collection to improve the precision of preparation for the participation in various events; improve the ability of athletes in different events by classification, and scientifically select the athletes with the strongest comprehensive strength; create accurate technology assistance programs for different events to improve the scientific and smart level of training and preparation.

Key words: competitive sports, Paris Olympics, Olympic preparation, preparation strategy, new type of whole-nation system, sports training