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The purpose of this study is making guide of effective exercise through analysis of kinematic factors and providing feedback data in Javelin throw. The definite purpose of study is not changing all of subject's motion but only diverting the motion factor caused fluctuated record. The analysis were based on phase which composed of running phase, cross-step phase, delivery phase and release phase. The subject of this study was only one javelin thrower who already passed the standard record for the Athens Olympic competition. Equipments for data collection were four video camera, three of four was usual video camera(60frame/sec) for motion capture and one of four was high speed camera(180frame/sec), for capturing momentary motion, such as javelin release. The conclusion are as follows.1) The higher the degree of subject's performance was, the shorten the stride of last step just before release was. On the other hand, if the stride of last step lengthen, the height of release shorten automatically. Thus, in order to achieve approved and stable record, subject should be exercised to shorten the stride of last step.2) In motion of Javelin throw, the motion of segments tend to move proximal to distal. In terms of well performance, the throwing motion depend not on shoulder but on all of arm with shoulder for axis. 3) The release height was increased in proportion to the release velocity. The release height depend on the left knee angle which play a important part of axis. 4) Subject in this study weakened hip rotation force but had a powerful shoulder rotation force. So in order to improve subject's record, specific exercise which could enlarge trunk rotation force should be needed.