Service is the first attack of volleyball games. A powerful service can not only repress opponent's formation changes and screen advances but also score directly. Therefore, learning service motions should not be looked down upon by volleyball players. This study used National Taiwan University female students as the subjects. From the fndings of this study, the learning effect of hook service is better than that of over head service. It is because learning overhead service motions is more difficult than learninghook service motions.