The purpose of this study was to understand the moral development stages of junior high school basketball players’ in sports situation and whether basketball training promotes moral development in these junior high school students. Sport Moral Questionnaire was adopted as research tool. Totally 219 junior high school students (99 subjects were school basketball players and 120 subjects were their counterparts) were participated in this study. Recovery rate of valid questionnaire was 73%. Descriptive statistics and chi-square test were adopted and the statistical significance level was set at α=.05. The main findings were concluded after discussion as: the moral development stages of the junior high school basketball players were 39.7% on Pre-Conventional stage, 22.6% on Conventional stage, and 37.7% on Post-Conventional stage and the participation of school basketball team training for 1.6 years did not appear to affect the moral development of these students.