The study was conducted in Amhara regional state in east Gojjam,Enarji Enawuga woreda in the specific place of Arara primary school. The purpose of this study was to investigate the effect of plyometric training on some selected skill related physical fitness improvement in the case of Arara primary school male athletics project. The researcher was selected speed, agility and power from skill related physical related physical fitness variables. And the researcher was given 12-week plyometric training for the study groups. In Arara primary school, male athletes were the main target of the study. They were 18 in number. All 18 male athletes were selected by purposive sampling method. In order to assess the selected skill related physical fitness variables of male athletes in Arara primary school before and after 12-week plyometric training the main source of data collection was field tests. For all measures of speed with 60 meter running test, agility with Illinois agility test and power with vertical jump test were conducted. The data was analyzed through descriptive statistics (such as statistical procedures in which arithmetic mean, standard deviation and Paired-Samples T test). The results of this study showed that the plyometric training had statistically significant improvements in speed, agility and power at (p <0.05. The results of this study showed that plyometric training improved athlete’s speed, agility and power performance.