The purpose of this study was to explore the effects of goal difficulty and rewards on the learning performance and intrinsic motivation for college students' softball throwing. Eighty subjects recruited from Taipei Physical Education College participated in the study. All the subjects were randomly assigned to six experimental groups. This study adopted the experimental method and used ”softball throwing” as the experimental task. All the subjects were administered an ”intrinsic motivation scale” and a ”goat acceptance scale”. Results showed that: 1.Goal difficulty and reward method did not interactively affect softball throwing learning performance. 2.Goal difficulty and reward method did not interactively affect softball throwing intrinsic motivation. 3.The intrinsic motivation of softball throwing for easy goal group was higher than that of difficult goal group. 4.The intrinsic motivation of softball throwing for material reward group was higher than those of oral praise group and oral praise with post material reward group, and there was not difference of intrinsic motivation between oral praise with post material reward group and oral praise group.