The purposes of this study were to explore the current situation of organizational justice and organizational citizenship behavior on basketball coaches, and explore the predictive power of organizational justice on basketball coaches' organizational citizenship behavior. The research approach applied to this study was the survey method with a questionnaire. The researcher took the basketball coaches who joined the Junior High School Basketball Tournament in 2009 as samples. 312 samples were effective among 337 basketball coaches and the rate of retrieve was 92.58%. The findings from the analysis were summarized as follows: (1) The basketball coaches' perception of organizational justice is at upper middle level. (2) The basketball coaches' organizational citizenship behavior is at upper middle level. (3) Seniority, contest category and school scale can influence basketball coaches' perception of organizational justice. (4) Gender and seniority can influence basketball coaches' organizational citizenship behavior. (5) There is a significant positive relationship between organizational justice and organizational citizenship behavior on basketball coaches. (6) Basketball coaches' perception of organizational justice has a significant predictability on their organizational citizenship behavior.