The purpose of this study was to clarify psychological aptitude. Ninety-four Junior High School tall volleyball players （mean height＝185.1±5.4 cm,48 male and 173.9 ± 4.2 cm, 46 female） were picked up for this study. To measure their psychological aptitude，we used following 3 type of scale TSMI （Taikyo Sport Motivation Inventory），MPI （Maudsley personality Inventory），and SCAT （Sports Competition Anxiety Test）. The date were analyzed SPSS 20.0 for Windows. A criterion level of .05 was used in this study. The results showed that girl players were significantly higher than boy players in 4 sub-scales，Challenge to the Goal（t ＝ 2.61，p ＜ .05），Value of Athletics（t ＝ 2.18，p ＜ .05）， Causal Attribution to the Effort（t ＝ 3.01，p ＜ .05）and Victory Intentionality（t ＝ 2.85，p ＜ .05）.In addition, girl players were significantly higher than boy players in Introversion - Extroversion scale（t ＝ 2.61，p ＜ .05）. Therefore, these results suggested that the girl players on this study are more ambitious and extroverted than boy players. Follow up research should examine on a continuing for clarify psychological aptitude.