This paper based on the new rules formulated by the International Gymnastics Federation “FIG 2022-2024 Aerobic Gymnastics Scoring Rules”, employs methods such as the literature review method, video analysis method, mathematical statistics method, and comparative analysis method to analyze the selection, combination, and category of difficult movements of the top eight teams in the 18th World Aerobic Gymnastics Championship in the trio aerobics event. The study finds that: (1) The difficult movements selected in this competition are within the score range of 0.5~1.0, with the highest usage rate of 0.7; (2) In terms of the selection of difficulty groups, athletes choose group B difficult movements more frequently than other groups, especially the pose jump in category 5, which each team selected twice; (3) By using SPSS software to analyze the correlation between difficult movements and total scores, it is found that the total score is strongly correlated with the difficult movements (R=0.898>0.8). The data that the difficult movements score of China’s second team is advantageous. The technique of difficult movements has a prominent impact on the total score, and difficult movements hold an important position in the competition, directly affecting the competition results. At the same time, it also reflects the development trend of the technical level of this sport.