Due to the new Taekwondo competition rule modified in 2009 by the World Taekwondo Federation, some facilities and the protector and scoring systems (PSS) were changed. Thus, the purpose of this study was to investigate the effect of new competition rule on the attacking formats among Taiwan male Taekwondo players. Subjects were 16 athletes in final selection of national team for 2009 World champion game. The attacking formats were judged by referees among all games recorded by video. And then the difference of rate of attacking, rate of valid scoring and successful rate among all weight levels were computed by descriptive statistics. The results revealed:1. The highest rate of valid scoring was 86.47% for the roundhouse kick, followed by 6.02% for back kick, 4.51% for axe kick, 3.01% for turn roundhouse kick and then 0% for front tread, hook kick and fist.2. The highest rate of attacking was 78.47% for roundhouse kick, followed by 7.67% for axe kick, and 4.95% for back kick. However, the successful rate of back kick was higher than axe kick.3. In terms of attack formats, the highest rate of attacking was 83.91% for middle attack, followed by 8.42% for upper attack, and 7.67% for turn movement. It had the same ranking as the scoring rate.4. Scoring rate of active attack (70.68%) was much higher than defensive attack (29.32%). Thus it showed that players adjusted to attack more actively for avoiding losing points resulted from defending over a smaller competition area.Results of this study can provide some reference about training and competition for Taekwondo coaches to improve Taiwan Taekwondo performance and regain competition achievements.