The factors determining female university students' sport participation were examined by analyzing such items as their experiences of athletic group activities at high school and university, the reasons for participating in sports, promotive or impedimental causes to their sports participation and so forth. The survey was conducted in class to 996 students toward the end of school year by questionnaire method. The analyses of variance and stepwise multiple regression were applied to the data, and on analyses following results were obtained: 1)The longer the period of their athletic group activities at high school, the more sports participation is seen at university. 2)Among such factors as play, health, socializing, skill and exploration which determine the reason for sports participation, the factor of play exerts the greatest influence and the least is that of skill. 3)As to the factors determining the frequency of sports participation, the experience of participating in athletic group is the most dominant, and next ones are preconditions of various kinds which act as promotive or impedimental causes to their sports participation. As for the former factor the experience of athletic group activities at university is the most influential upon the frequency of their sports participation, and the frequency at high school comes next. Among the latter ones willingness of participating in sports is of the greatest importance, and then followed by co-participants, free time and financial conditions in this order. 4)The kinds of sports the subjects practiced at athletic groups in the past are very liable to be chosen both at present and in future when the chance for sports participation is or will be available for them, and the more recently they were practiced, the more they tend to be chosen at present and also in future. 5)The kinds of sports the subjects wish to play in future are easy and light ones to be enjoyed in a small group. Hard and heavy ones which require large quantity of motion marked the least preference.