The purpose of this study is to resolve "moral conflict" in sport and to present a better approach with respect to right actions for sports participants. While acknowledging that there are many positive values or principles (e.g. Olympism) in sport, some "moral conflict" in sport might still arise and therefore cannot be easily resolved. By introducing Hare's two levels of moral thinking (i.e. intuitive level and critical level), I first clarify the question "Why do moral conflicts appear?" That moral conflicts may arise normally is because people or philosophers tend to think that moral principles ought to be simple and general. In the general situation, it would be fine to follow these kinds of principles when there is no conflicting situation. But in a particular context, there might be a problem. It would be impossible to resolve a conflicting problem if we do not think critically. Second, I suggest that "keep the rules" can be seen as a prima facie principle or duty for sports participants. However, this prima facie principle may not be sufficient or appropriate to resolve the problem of conflict by using the intuitive thinking, since one might face a conflict between "keep the rules" and "not to keep the rules" and s/he cannot select in between. Thus, critical thinking is needed. Third, I try to differentiate critical thinking from intuitive thinking. Critical thinking aims not only to select the best set of prima facie principles for use in intuitive thinking, but also to resolve conflicts between them. So, if we are able to think critically, a prima facie duty sometimes can be overridden by other more important duties (sound and ethical) in a particular situation. However, as not all sports participants are capable enough to think critically, moral education regarding how to develop athletes' "critical thinking" in sport is needed. It may be recommended that virtue ethics play an important role in sport not just through initiating participants into rule-following but also in cultivating certain dispositions and educating their desires. As it is, what we also need is a good sports education system which can enlighten people toward a better understanding of sport and its values. (Contains 1 table and 3 notes.)