The purpose of this study was to investigate a Gymnastic participation motivation of gymnasts in Japan and to provide information with gymnastic teachers and leaders. The 96 subjects for this study were males and females. who are register school and gymnastic club in Japan Gymnastic Federation of Aichi, Nagoya and Ishin in Japan. The results of this study are as following. participation period about Gymnastic participation motivation showed highest scores as 92.9% more than which the subject over 9 years after 17 age occupies. male showed high scores than female, with regard to external display in external motivation and achivement internal motivation, but skill development, enjoyment, condition, affiliation, and health·fitness was not showed difference. subjects aged after 17aged showed higher scores in internal motivation such as achievement than subjects aged 14~16 and 10~13, and 10~13 year old showed high scores for external motivation such as affiliation than 14~16 year old and after 17 year old. condition affiliation and in external motivation was higher in afternoon than in the morning and evening, but health·fitness was higher in afternoon than in the evening and morning.