By using the method of documentation, video analysis, mathematical statistics, combined with 2005 - 2008 Competitive Aerobics new rules, the author carried on the observation and statistics in the full - set action of the athletes who won the first three places and two Chinese athletes in the mixed pair project of the 9th Aerobic Gymnastics World Championships, analyzed the disparities on the points of the artistic, execution, difficulty, as well as the score, the groups, the use of space and the quality of completed of difficulty action betwee...