Purpose: The purpose of the study was to examine the effects of achievement goal orientation on psychological skills of Korean high school Taekwondo(TKD) athletes. Methods: The subjects were 268 high school Taekwondo athletes (207 males and 61 females). In order to investigate the validity and reliability of the questionnaire exploratory factor analysis was conducted. Descriptive statistic analysis, ANOVAs, Sheffe post-hoc tests and regression analyses were performed. Results: Results were as follows. 1) There was no gender differences in achievement goal orientation were found. However, the difference was shown in skill levels(high vs. low group). 2) There were significant differences between gender and skill level in psychological skills. Task goal orientation in male influenced on th psychological factors such as will power, imagery, self-efficacy, team harmony, concentration, and goal setting, while ego orientation did only on the goal setting. In female, task orientation influenced on will power, imagery, self-efficacy, team harmony, and goal setting, while ego orientation didn’t influence at all, which reflecting the goal setting is a common achievement motivation factor in male and female. Conclusion: Results supported the previous research reflecting the importance of task orientation. In addition, the result also implies that the psychological skills influenced by motivation orientation would differ based upon the characteristics of each sport. Future directions and limitations were discussed.