Prospective emotions affect people’s choice of follow-up behavior. This study used experimentalmethods to examine how athletes’ prospective feelings about the task to be completed affect their taskperformance. The results showed that the interaction between prospective emotion and feedback wassignificant. When the prospect was low, positive and negative feedback were given, and the participants’feelings were not significantly different, but the number of correct answers was significantly more positivefeedback. When the prospect is high, positive feedback improves the athlete’s feeling, but the number ofcorrect answers in the two groups is basically the same. When positive feedback is given, the consistencyof emotional feelings plays a complete mediating role in the influence of prospect emotions on taskpersistence (time). The level of individual self-efficacy explains why the athletes’ task performance isdifferent when the prospect is high and low. The prospective emotional level will significantly predictthe athletes’ time effort in the task with the change of individual self-efficacy level. Conclusion: Athletes’prospect of the task to be completed affects task performance, and affects individual persistence throughemotional consistency and self-efficacy. Giving appropriate feedback based on athletes’ prospect of thetask can promote performance.