采用文献研究、数理统计和逻辑分析等方法,对参加第31届里约奥运会田赛项目的运动员的比赛发挥情况进行分析。结果表明,跳跃类项目的发挥率相对于投掷类项目波动比较大,投掷类项目比较稳定;跳跃类项目女子发挥率普遍高于男子,投掷类项目发挥率男子普遍高于女子;最后跳跃类和投掷类项目的失常率都是高居不下,运动员发挥失常较为普遍。 By means of literature research, mathematical statistics and logical analysis, the author analyzes the performance of athletes participating in the 31st Olympic Games in Rio. The results show that the jumping rate of the jumping items is larger than that of the throwing items and the throwing items are relatively stable. The jumping rate of the jumping items is generally higher than that of the men and the throwing items are generally higher than that of the men. The last jumping category and Throwing items of the disorder rate is high, athletes play more common.