This paper use of literature , questionnaire , retroactive law , field investigation , combing statistics and research methods , the United States to China , Russia and other throwing athlete ability spatial and temporal characteristics of dynamic analysis , the researchers think :throwing athletes space - time state transfer of athletic ability , is to find and determine the conditions and environment of physical development and training stimulus load external conditions , in the flow of time to cross the the best fusion point , the United States , Russia Throwers start training age , Specialization and age as well as to achieve a level of age , the corresponding later than the Chinese athletes , our athletes are showing is “younger” trend , our men and women throwing class athletes rapid growth period between 14-18 years of age , a period in which the growth rate drops age 18-19 years of age , this development features is very different , if premature hair load special adult training juvenile athletes , athletic performance in juvenile stages of development of the peak may be different levels weaken or damage could have obtained higher achievement , which may affect the development of athletic performance in athletes adult .%运用文献资料法、问卷调查法、追溯法、实地调查法、梳理统计法等研究方法，对中国和美国、俄罗斯等部分投掷运动员竞技能力状态的时空特征进行动态分析。研究表明：投掷项目运动员竞技能力时空状态转移，是寻找和确定身体发育条件与环境和训练刺激负荷等外在的条件，在时间流上交叉的最佳融合点，美、俄投掷运动员所达到始训年龄，专项化年龄以及达到一级水平的年龄，相应比中国运动员晚，我国运动员普遍呈现“年轻化”趋势；过早对少年运动员进行超发负荷的专项成人化训练，可能会影响运动员成年后的运动成绩的发展。
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